{"id":3681,"date":"2026-06-14T14:15:11","date_gmt":"2026-06-14T14:15:11","guid":{"rendered":"https:\/\/allenglish4u.com\/grammar-intermediate-unit-23\/"},"modified":"2026-06-14T14:15:11","modified_gmt":"2026-06-14T14:15:11","slug":"grammar-intermediate-unit-23","status":"publish","type":"page","link":"https:\/\/allenglish4u.com\/vi\/grammar-intermediate-unit-23\/","title":{"rendered":"will and going to \u2014 English Grammar in Use (Unit 23)"},"content":{"rendered":"<style>.ae4u-u1{--g1:#0E9F6E;--g2:#057A55;--g3:#0B7A56;--ink:#0E2A22;--mut:#5B7268;--paper:#FBFDFB;--card:#FFFFFF;--line:#E2EFE9;--amber:#F59E0B;--bad:#E0556B;--good:#0E9F6E;--soft:#F1F8F5;\n  font-family:'Plus Jakarta Sans',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);max-width:980px;margin:0 auto;padding:0 18px 60px;-webkit-font-smoothing:antialiased;}\n.ae4u-u1 *{box-sizing:border-box;}\n.ae4u-u1 .serif{font-family:'Fraunces',Georgia,serif;}\n\n\/* ---- Unit hub (intermediate selector) ---- 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.sv-b{width:22px;height:22px;border-radius:50%;color:#fff;font-weight:800;font-size:13px;display:flex;align-items:center;justify-content:center;flex:0 0 22px;}\n.ae4u-u1 .sv.ok .sv-b{background:var(--good);}\n.ae4u-u1 .sv.no .sv-b{background:var(--bad);}\n@media(max-width:520px){.ae4u-u1 .sv-grid{grid-template-columns:1fr;}}\n\/* remember box *\/\n.ae4u-u1 .remember{display:flex;gap:12px;align-items:flex-start;background:linear-gradient(135deg,#F1F8F5,#E9F8F1);border:1px solid #C7EAD9;border-radius:14px;padding:15px 17px;}\n.ae4u-u1 .rm-ic{font-size:22px;}\n.ae4u-u1 .remember div{font-size:15px;line-height:1.55;}\n.ae4u-u1 .rm-tag{display:inline-block;font-weight:800;font-size:13px;color:#fff;background:var(--g2);border-radius:7px;padding:1px 8px;}\n\/* qn status + pop *\/\n.ae4u-u1 .qn.ok{background:var(--good);color:#fff;animation:pop .3s ease;}\n.ae4u-u1 .qn.no{background:var(--bad);color:#fff;animation:pop .3s ease;}\n.ae4u-u1 .qn.shown{background:var(--amber);color:#fff;}\n@keyframes pop{0%{transform:scale(.6);}60%{transform:scale(1.25);}100%{transform:scale(1);}}\n\/* celebrate *\/\n.ae4u-u1 .celebrate{display:none;background:linear-gradient(135deg,#057A55,#0E9F6E);color:#fff;border-radius:16px;padding:16px 20px;font-size:17px;font-weight:700;text-align:center;margin-bottom:16px;box-shadow:0 14px 30px -16px rgba(6,61,44,.6);}\n.ae4u-u1 .celebrate.show{display:block;animation:pop .45s ease;}\n\n\/* cross-page live unit chips *\/\n.ae4u-u1 a.unit-chip:not(.live){cursor:pointer;}\n.ae4u-u1 a.unit-chip:not(.live):hover{transform:translateY(-2px);background:rgba(255,255,255,.20);border-color:rgba(255,255,255,.45);}\n.ae4u-u1 .unit-chip .st.live2{background:#34D399;color:#063D2C;}\n<\/style>\n<div class=\"ae4u-u1\"><div class=\"hub\"><div class=\"eyebrow\">English Grammar in Use \u00b7 Murphy<\/div><h2 class=\"serif\">Intermediate Grammar<\/h2><p>Master English grammar one unit at a time. Clear notes, then 40+ interactive exercises with instant feedback \u2014 based on the topics in <i>English Grammar in Use (Intermediate)<\/i>.<\/p><div class=\"units\"><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate\/\"><div class=\"un\">UNIT 1<\/div><div class=\"ut\">Present continuous<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate-unit-2\/\"><div class=\"un\">UNIT 2<\/div><div class=\"ut\">Present simple<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate-unit-3\/\"><div class=\"un\">UNIT 3<\/div><div class=\"ut\">Continuous or simple?<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate-unit-4\/\"><div class=\"un\">UNIT 4<\/div><div class=\"ut\">Action or state?<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate-unit-5\/\"><div class=\"un\">UNIT 5<\/div><div class=\"ut\">Past simple<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate-unit-6\/\"><div class=\"un\">UNIT 6<\/div><div class=\"ut\">Past continuous<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate-unit-7\/\"><div class=\"un\">UNIT 7<\/div><div class=\"ut\">Present perfect<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate-unit-8\/\"><div class=\"un\">UNIT 8<\/div><div class=\"ut\">Present perfect<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate-unit-9\/\"><div class=\"un\">UNIT 9<\/div><div class=\"ut\">Present perfect cont.<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate-unit-10\/\"><div class=\"un\">UNIT 10<\/div><div class=\"ut\">Perfect: cont. or simple?<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate-unit-11\/\"><div class=\"un\">UNIT 11<\/div><div class=\"ut\">How long\u2026?<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate-unit-12\/\"><div class=\"un\">UNIT 12<\/div><div class=\"ut\">For &#038; since<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate-unit-13\/\"><div class=\"un\">UNIT 13<\/div><div class=\"ut\">Perfect vs past 1<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate-unit-14\/\"><div class=\"un\">UNIT 14<\/div><div class=\"ut\">Perfect vs past 2<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate-unit-15\/\"><div class=\"un\">UNIT 15<\/div><div class=\"ut\">Past perfect<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate-unit-16\/\"><div class=\"un\">UNIT 16<\/div><div class=\"ut\">Past perfect cont.<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate-unit-17\/\"><div class=\"un\">UNIT 17<\/div><div class=\"ut\">Have &#038; have got<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate-unit-18\/\"><div class=\"un\">UNIT 18<\/div><div class=\"ut\">Used to (do)<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate-unit-19\/\"><div class=\"un\">UNIT 19<\/div><div class=\"ut\">Future: present tenses<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate-unit-20\/\"><div class=\"un\">UNIT 20<\/div><div class=\"ut\">Future: going to<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate-unit-21\/\"><div class=\"un\">UNIT 21<\/div><div class=\"ut\">Future: will\/shall<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip\" href=\"\/vi\/grammar-intermediate-unit-22\/\"><div class=\"un\">UNIT 22<\/div><div class=\"ut\">Future: will\/shall 2<\/div><div class=\"st live2\">\u25cf LIVE \u2192<\/div><\/a><a class=\"unit-chip live\" href=\"#u1-worksheet\"><div class=\"un\">UNIT 23<\/div><div class=\"ut\">Future: will \/ going to<\/div><div class=\"st\">\u25cf You&#8217;re here<\/div><\/a><\/div><\/div><div id=\"u1-worksheet\"><\/div><div class=\"ws-head\"><div style=\"flex:1 1 260px\"><span class=\"ws-badge\">UNIT 23 \u00b7 Intermediate \u00b7 B1\u2013B2<\/span><h1 class=\"serif\">will and going to<small>&#8220;I&#8217;ll do \/ I&#8217;m going to do&#8221; \u2014 44 interactive questions<\/small><\/h1><\/div><div class=\"ring-wrap\"><div class=\"ring\"><svg width=\"74\" height=\"74\"><circle cx=\"37\" cy=\"37\" r=\"33\" fill=\"none\" stroke=\"#E2EFE9\" stroke-width=\"7\"\/><circle id=\"ring-fg\" cx=\"37\" cy=\"37\" r=\"33\" fill=\"none\" stroke=\"#0E9F6E\" stroke-width=\"7\" stroke-linecap=\"round\" stroke-dasharray=\"207\" stroke-dashoffset=\"207\"\/><\/svg><div class=\"pct\" id=\"ring-pct\">0%<\/div><\/div><div class=\"ring-lbl\">Correct answers<\/div><\/div><button class=\"btn-reset\">\u21ba Reset<\/button><\/div><div class=\"tabs\"><button class=\"tab active\" data-tab=\"notes\">\ud83d\udcd6 Grammar Notes<\/button><button class=\"tab\" data-tab=\"ex1\">\ud83c\udfaf Ex 1<span class=\"badge\">8<\/span><\/button><button class=\"tab\" data-tab=\"ex2\">\ud83e\udde9 Ex 2<span class=\"badge\">10<\/span><\/button><button class=\"tab\" data-tab=\"ex3\">\ud83d\udd18 Ex 3<span class=\"badge\">8<\/span><\/button><button class=\"tab\" data-tab=\"ex4\">\ud83d\udd00 Ex 4<span class=\"badge\">6<\/span><\/button><button class=\"tab\" data-tab=\"ex5\">\ud83d\udee0\ufe0f Ex 5<span class=\"badge\">6<\/span><\/button><button class=\"tab\" data-tab=\"ex6\">\ud83c\udfa7 Ex 6<span class=\"badge\">6<\/span><\/button><\/div><div id=\"u1-celebrate\" class=\"celebrate\">\ud83c\udf89 Brilliant! You finished all 44 questions of Unit 23!<\/div><div id=\"u1-panels\"><div class=\"panel active\" id=\"panel-notes\"><div class=\"note-block\" style=\"border-bottom:none;padding-top:0\"><div style=\"background:#F1F8F5;border:1px dashed #B7DCCC;border-radius:14px;padding:18px 20px;display:flex;gap:16px;align-items:center;flex-wrap:wrap\"><div style=\"font-size:34px\">\ud83c\udfac<\/div><div style=\"flex:1 1 240px\"><div style=\"font-weight:700;font-size:16px;margin-bottom:3px\">Video lesson \u2014 coming soon<\/div><div style=\"font-size:14px;color:#5B7268;line-height:1.5\">No video for this unit on the <b>All English 4U<\/b> channel yet. Record a short lesson, upload it to YouTube, and we&#8217;ll embed it right here.<\/div><\/div><a href=\"https:\/\/www.youtube.com\/@AllEnglish4U\" target=\"_blank\" rel=\"noopener\" style=\"background:#057A55;color:#fff;text-decoration:none;border-radius:10px;padding:9px 16px;font-weight:700;font-size:14px;white-space:nowrap\">\u25b6 Open channel<\/a><\/div><\/div><h2 style=\"margin-top:6px\">\ud83d\udcd6 Grammar Reference \u2014 will and going to<\/h2><p class=\"instr\">Study the notes, then work through the six exercises.<\/p><div class=\"learn-strip\">\n  <div class=\"ls-item\"><span class=\"ls-ic\">\ud83c\udfaf<\/span><div><b>What you&#8217;ll learn<\/b><span>going to = already decided \/ clear evidence \u00b7 will = decide now \/ opinion<\/span><\/div><\/div>\n  <div class=\"ls-item\"><span class=\"ls-ic\">\ud83d\udd70\ufe0f<\/span><div><b>~15 min<\/b><span>Notes + 6 exercises<\/span><\/div><\/div>\n  <div class=\"ls-item\"><span class=\"ls-ic\">\u2705<\/span><div><b>44 questions<\/b><span>Instant feedback<\/span><\/div><\/div>\n<\/div>\n<div class=\"note-block\">\n  <h3><span class=\"note-tag\">A<\/span> <em class=\"hl\">(I&#8217;m) going to<\/em> \u2014 a plan already decided<\/h3>\n  <div class=\"formula\">\n    <span class=\"fb-subj\">I&#8217;m \/ he&#8217;s \/ they&#8217;re<\/span>\n    <span class=\"fb-aux\">going to<\/span>\n    <span class=\"fb-verb\">do<\/span>\n  <\/div>\n  <p class=\"instr\" style=\"margin-top:2px\">Use <b>be going to + base verb<\/b> for something you have <b>already decided<\/b> to do \u2014 the decision was made <i>before<\/i> the moment of speaking.<\/p>\n  <table class=\"form-table\">\n    <tr><td><b>Plan<\/b><\/td><td>We&#8217;ve bought the tickets. We<b>&#8216;re going to fly<\/b> to Rome.<\/td><\/tr>\n    <tr><td><b>Intention<\/b><\/td><td>She<b>&#8216;s going to study<\/b> medicine \u2014 she decided last year.<\/td><\/tr>\n    <tr><td><b>Negative<\/b><\/td><td>I<b>&#8216;m not going to<\/b> watch TV tonight; I have to study.<\/td><\/tr>\n  <\/table>\n  <p class=\"tip\">\ud83d\udca1 If the plan already exists in your mind, choose <b>going to<\/b> \u2014 not <i>will<\/i>.<\/p>\n<\/div>\n<div class=\"note-block\">\n  <h3><span class=\"note-tag\">B<\/span> <em class=\"hl\">going to<\/em> \u2014 what you can <u>see<\/u> is about to happen<\/h3>\n  <p class=\"instr\" style=\"margin-top:0\">Use <b>going to<\/b> for a prediction based on <b>evidence you can see right now<\/b> \u2014 something is clearly about to happen.<\/p>\n  <div class=\"sv-grid\">\n    <div class=\"sv ok\"><span class=\"sv-b\">Evidence<\/span> Look at those black clouds! It<b>&#8216;s going to rain<\/b>.<\/div>\n    <div class=\"sv ok\"><span class=\"sv-b\">Evidence<\/span> Careful \u2014 you<b>&#8216;re going to drop<\/b> those plates!<\/div>\n  <\/div>\n  <p class=\"tip\">\u26a0\ufe0f The proof is in front of you <i>now<\/i>, so the future feels certain \u2192 <b>going to<\/b>.<\/p>\n<\/div>\n<div class=\"note-block\">\n  <h3><span class=\"note-tag\">C<\/span> <em class=\"hl\">will (&#8216;ll)<\/em> \u2014 decide now \u00b7 offer \u00b7 opinion<\/h3>\n  <div class=\"formula\">\n    <span class=\"fb-subj\">I \/ you \/ it<\/span>\n    <span class=\"fb-aux\">will (&#8216;ll)<\/span>\n    <span class=\"fb-verb\">do<\/span>\n  <\/div>\n  <p class=\"instr\" style=\"margin-top:2px\">Use <b>will<\/b> for a decision made <b>at the moment of speaking<\/b>, and for <b>opinions or predictions<\/b> about the future (often with <i>think, sure, probably, expect<\/i>).<\/p>\n  <div class=\"chips\">\n    <span class=\"chip\">OK, I&#8217;ll help.<\/span><span class=\"chip\">I think it&#8217;ll rain.<\/span><span class=\"chip\">I&#8217;m sure she&#8217;ll pass.<\/span><span class=\"chip\">It&#8217;ll probably be cold.<\/span>\n  <\/div>\n  <div class=\"sv-grid\">\n    <div class=\"sv ok\"><span class=\"sv-b\">Decide now<\/span> &#8220;The phone&#8217;s ringing.&#8221; \u2014 &#8220;<b>I&#8217;ll get<\/b> it.&#8221;<\/div>\n    <div class=\"sv no\"><span class=\"sv-b\">Not a plan<\/span> <s>I&#8217;m going to get it<\/s> \u2014 you decided <i>as you spoke<\/i>, so use <b>I&#8217;ll<\/b>.<\/div>\n  <\/div>\n  <p class=\"tip\">\ud83d\udcd6 You cannot <i>see<\/i> an opinion, so use <b>will<\/b>: <b>I think<\/b> our team <b>will win<\/b>. Use <b>going to<\/b> only when the evidence is right in front of you.<\/p>\n  <div class=\"remember\"><span class=\"rm-ic\">\ud83d\udccc<\/span>\n    <div><b>Remember<\/b> \u2014 <span class=\"rm-tag pos\">going to<\/span> = already decided <i>or<\/i> clear evidence now; <span class=\"rm-tag pos\">will \/ &#8216;ll<\/span> = a decision <i>made as you speak<\/i>, an offer, or an opinion (I think \/ I&#8217;m sure). After both, use the <b>base verb<\/b>.<\/div>\n  <\/div>\n<\/div>\n<div class=\"check-bar\"><button class=\"nav-next\" data-next=\"notes\" style=\"margin-left:0\">Start Exercise 1 \u2192<\/button><\/div><\/div><\/div><p class=\"src-note\">Made with care for English learners \u00b7 <b>allenglish4u.com<\/b><br>Original practice material inspired by the <i>English Grammar in Use<\/i> syllabus (Cambridge University Press). Example sentences and exercises are written by All English 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id='ae4u-gfont';if(!document.getElementById(id)){var l=document.createElement('link');l.id=id;l.rel='stylesheet';l.href='https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Fraunces:opsz,wght@9..144,600;9..144,700&display=swap';document.head.appendChild(l);}}catch(e){}})();
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  var root = document.querySelector('.ae4u-u1');
  if(!root || !DATA) return;
  var TOTAL = DATA.unit.total;
  var state = {};   // itemKey -> 'ok' | 'no' | 'shown'

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    var s='<div class="item" data-key="'+key+'" data-type="'+ex.type+'">';
    s+='<span class="qn">'+n+'</span>';
    if(ex.type==='spell'){
      s+='<span class="qtext"><span class="base">'+esc(it.base)+'</span> <span class="arrow">→</span> <input class="gap" data-key="'+key+'" autocomplete="off" spellcheck="false"></span>';
    } else if(ex.type==='gap'){
      s+='<span class="qtext">'+esc(it.pre)+' <input class="gap" data-key="'+key+'" autocomplete="off" spellcheck="false"> <span class="hint">'+esc(it.hint)+'</span> '+esc(it.post)+'</span>';
    } else if(ex.type==='mcq'){
      s+='<span class="qtext">'+esc(it.q)+'</span><div class="mcq-opts" data-key="'+key+'">';
      it.opts.forEach(function(o,oi){ s+='<button class="opt" data-oi="'+oi+'">'+esc(o)+'</button>'; });
      s+='</div>';
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      s+='<span class="qtext" style="flex-basis:100%"></span><div class="ord-build" data-key="'+key+'"></div><div class="ord-bank" data-key="'+key+'">';
      it.words.forEach(function(w,wi){ s+='<button class="word" data-w="'+esc(w)+'">'+esc(w)+'</button>'; });
      s+='</div>';
    } else if(ex.type==='fix'){
      s+='<span class="qtext"><s style="color:#94a3a0">'+esc(it.sentence)+'</s> &nbsp;→&nbsp; <input class="gap" data-key="'+key+'" autocomplete="off" spellcheck="false" placeholder="correct word(s)"></span>';
    } else if(ex.type==='listen'){
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    s+='<button class="show-a" data-key="'+key+'">Show answer</button>';
    s+='</div>';
    return s;
  }

  // ---------- interactions ----------
  // MCQ select
  root.addEventListener('click',function(e){
    var opt=e.target.closest('.opt');
    if(opt){
      var box=opt.parentNode; box.querySelectorAll('.opt').forEach(function(o){o.classList.remove('sel');});
      opt.classList.add('sel'); box.dataset.sel=opt.dataset.oi; return;
    }
    var w=e.target.closest('.ord-bank .word');
    if(w){ var k=w.parentNode.dataset.key; root.querySelector('.ord-build[data-key="'+k+'"]').appendChild(w); return; }
    var bw=e.target.closest('.ord-build .word');
    if(bw){ var k2=bw.parentNode.dataset.key; root.querySelector('.ord-bank[data-key="'+k2+'"]').appendChild(bw); return; }
    var pb=e.target.closest('.play-btn');
    if(pb){ speak(pb); return; }
    var sa=e.target.closest('.show-a');
    if(sa){ showAnswer(sa.dataset.key); return; }
    var cb=e.target.closest('.btn-check');
    if(cb){ checkEx(cb.dataset.ex); return; }
    var nx=e.target.closest('.nav-next');
    if(nx){ gotoNext(nx.dataset.next); return; }
    var tb=e.target.closest('.tab');
    if(tb){ activate(tb.dataset.tab); return; }
    var rs=e.target.closest('.btn-reset');
    if(rs){ resetAll(); return; }
  });

  // ---------- speech ----------
  function speak(btn){
    var t=btn.dataset.text;
    if(!('speechSynthesis' in window)){ alert('Your browser does not support audio playback. Please read the sentence below.'); return; }
    window.speechSynthesis.cancel();
    var u=new SpeechSynthesisUtterance(t);
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    var voices=window.speechSynthesis.getVoices();
    var gb=voices.filter(function(v){return /en-GB/i.test(v.lang);});
    if(gb.length) u.voice=gb[0];
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    u.onend=function(){ btn.classList.remove('playing'); btn.textContent='▶'; };
    u.onerror=function(){ btn.classList.remove('playing'); btn.textContent='▶'; };
    window.speechSynthesis.speak(u);
  }
  if('speechSynthesis' in window){ window.speechSynthesis.getVoices(); window.speechSynthesis.onvoiceschanged=function(){}; }

  // ---------- find item + answers ----------
  function getItem(key){
    var parts=key.split('-'); var exid=parts[0]; var idx=parseInt(parts[1],10);
    var ex=DATA.exercises.filter(function(e){return e.id===exid;})[0];
    return {ex:ex, it:ex.items[idx]};
  }
  function answersOf(ex,it){
    if(ex.type==='mcq') return [it.opts[it.correct]];
    if(ex.type==='order') return [it.answer];
    if(ex.type==='spell') return [it.answer];
    return it.answers;
  }

  // ---------- check single ----------
  function evalItem(key){
    var g=getItem(key), ex=g.ex, it=g.it, fb=root.querySelector('#fb-'+key);
    var correct=false, given='';
    if(ex.type==='mcq'){
      var box=root.querySelector('.mcq-opts[data-key="'+key+'"]');
      var sel=box.dataset.sel;
      box.querySelectorAll('.opt').forEach(function(o){o.classList.remove('ok','no');});
      if(sel!=null && sel!==''){
        given=it.opts[+sel];
        correct=(+sel===it.correct);
        box.querySelectorAll('.opt')[it.correct].classList.add('ok');
        if(!correct) box.querySelectorAll('.opt')[+sel].classList.add('no');
      } else { box.querySelectorAll('.opt')[it.correct].classList.add('ok'); }
    } else if(ex.type==='order'){
      var build=root.querySelector('.ord-build[data-key="'+key+'"]');
      var words=[].map.call(build.querySelectorAll('.word'),function(w){return w.dataset.w;});
      given=words.join(' ');
      correct=match(given,[it.answer]);
      build.classList.remove('ok','no'); build.classList.add(correct?'ok':'no');
    } else {
      var inp=root.querySelector('input.gap[data-key="'+key+'"]');
      given=inp.value;
      correct=match(given,answersOf(ex,it));
      inp.classList.remove('ok','no'); inp.classList.add(correct?'ok':'no');
    }
    var qn=root.querySelector('.item[data-key="'+key+'"] .qn');
    if(qn){ qn.classList.remove('ok','no','shown'); qn.classList.add(correct?'ok':'no'); }
    if(state[key]==='shown'){ /* keep shown */ }
    else state[key]=correct?'ok':'no';
    if(fb){
      if(correct) fb.innerHTML='<span class="mark-ok">✓ Correct</span>';
      else if(given!=='') fb.innerHTML='<span class="mark-no">✗ Try again</span>';
      else fb.innerHTML='<span class="mark-no">— no answer</span>';
    }
    return correct;
  }

  function checkEx(exid){
    var ex=DATA.exercises.filter(function(e){return e.id===exid;})[0];
    var ok=0;
    ex.items.forEach(function(it,idx){ if(evalItem(exid+'-'+idx)) ok++; });
    var sc=root.querySelector('#score-'+exid);
    sc.innerHTML='Score: <b>'+ok+' / '+ex.items.length+'</b>';
    updateProgress();
  }

  function showAnswer(key){
    var g=getItem(key), ex=g.ex, it=g.it, fb=root.querySelector('#fb-'+key);
    var ans=answersOf(ex,it)[0];
    if(ex.type==='mcq'){
      var box=root.querySelector('.mcq-opts[data-key="'+key+'"]');
      box.querySelectorAll('.opt').forEach(function(o){o.classList.remove('ok','no','sel');});
      box.querySelectorAll('.opt')[it.correct].classList.add('ok');
    } else if(ex.type==='order'){
      var build=root.querySelector('.ord-build[data-key="'+key+'"]');
      var bank=root.querySelector('.ord-bank[data-key="'+key+'"]');
      [].slice.call(build.querySelectorAll('.word')).forEach(function(w){bank.appendChild(w);});
      build.classList.remove('no'); build.classList.add('ok');
    } else {
      var inp=root.querySelector('input.gap[data-key="'+key+'"]');
      inp.value=ans; inp.classList.remove('no'); inp.classList.add('ok');
    }
    if(fb) fb.innerHTML='<span class="corr">Answer: '+esc(ans)+'</span>';
    if(state[key]!=='ok') state[key]='shown';
    var qn2=root.querySelector('.item[data-key="'+key+'"] .qn');
    if(qn2 && !qn2.classList.contains('ok')){ qn2.classList.remove('no'); qn2.classList.add('shown'); }

    updateProgress();
  }

  // ---------- progress ----------
  function updateProgress(){
    var done=0; for(var k in state){ if(state[k]==='ok') done++; }
    var pct=Math.round(done/TOTAL*100);
    var circ=root.querySelector('#ring-fg');
    var C=2*Math.PI*33;
    circ.style.strokeDasharray=C;
    circ.style.strokeDashoffset=C*(1-done/TOTAL);
    root.querySelector('#ring-pct').textContent=pct+'%';
    var cel=root.querySelector('#u1-celebrate'); if(cel) cel.classList.toggle('show', done>=TOTAL);
  }

  // ---------- tabs ----------
  function activate(id){
    root.querySelectorAll('.tab').forEach(function(t){t.classList.toggle('active',t.dataset.tab===id);});
    root.querySelectorAll('.panel').forEach(function(p){p.classList.toggle('active',p.id==='panel-'+id);});
    var sc=root.querySelector('.ws-head'); if(sc && sc.scrollIntoView) sc.scrollIntoView({behavior:'smooth',block:'start'});
  }
  function gotoNext(cur){
    var ids=['notes'].concat(DATA.exercises.map(function(e){return e.id;}));
    var i=ids.indexOf(cur); if(i>=0 && i<ids.length-1) activate(ids[i+1]);
  }

  function resetAll(){
    state={};
    root.querySelectorAll('input.gap').forEach(function(i){i.value='';i.classList.remove('ok','no');});
    root.querySelectorAll('.opt').forEach(function(o){o.classList.remove('ok','no','sel');});
    root.querySelectorAll('.mcq-opts').forEach(function(b){delete b.dataset.sel;});
    root.querySelectorAll('.feedback').forEach(function(f){f.innerHTML='';});
    root.querySelectorAll('.ex-score').forEach(function(s){s.innerHTML='';});
    root.querySelectorAll('.qn').forEach(function(q){q.classList.remove('ok','no','shown');});
    root.querySelectorAll('.ord-build').forEach(function(b){
      var bank=root.querySelector('.ord-bank[data-key="'+b.dataset.key+'"]');
      [].slice.call(b.querySelectorAll('.word')).forEach(function(w){bank.appendChild(w);});
      b.classList.remove('ok','no');
    });
    updateProgress();
  }

  updateProgress();
  activate('notes');
})();
\"))));<\/script>","protected":false},"excerpt":{"rendered":"<p>English Grammar in Use \u00b7 Murphy Intermediate Grammar Master English grammar one unit at a time. Clear notes, then 40+ interactive exercises with instant feedback \u2014 based on the topics in English Grammar in Use (Intermediate). UNIT 1 Present continuous \u25cf LIVE \u2192 UNIT 2 Present simple \u25cf LIVE \u2192 UNIT 3 Continuous or simple? [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-with-title","meta":{"footnotes":""},"class_list":["post-3681","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/allenglish4u.com\/vi\/wp-json\/wp\/v2\/pages\/3681","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/allenglish4u.com\/vi\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/allenglish4u.com\/vi\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/allenglish4u.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/allenglish4u.com\/vi\/wp-json\/wp\/v2\/comments?post=3681"}],"version-history":[{"count":0,"href":"https:\/\/allenglish4u.com\/vi\/wp-json\/wp\/v2\/pages\/3681\/revisions"}],"wp:attachment":[{"href":"https:\/\/allenglish4u.com\/vi\/wp-json\/wp\/v2\/media?parent=3681"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}