[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"grammar-exercise-01a01413-a0b8-7457-8930-45de026b8273":3,"grammar-exercise-lesson-019b7f66-b1e0-7f7e-8efb-a9853febaf95":293},["Reactive",4],{"id":5,"grammarPage":6,"title":7,"instructions":8,"displayOrder":9,"type":10,"questions":11,"ogImageUrl":292},"01a01413-a0b8-7457-8930-45de026b8273","\u002Fapi\u002Fgrammar_pages\u002F019b7f66-b1e0-7f7e-8efb-a9853febaf95","Past Perfect - Find and Fix","One word in each sentence is wrong. Tap it, then choose the correction.",4,"find_and_fix",[12,40,66,95,118,139,162,187,207,230,252,271],{"id":13,"sentenceTemplate":14,"displayOrder":15,"explanation":16,"exampleSentence":17,"blanks":18,"payload":19},"01a01413-a0b8-75a7-8930-45de0289603c","Has the ambulance already left with the patient when her family reached the empty flat?",0,"Use “Had” because the question asks whether the departure happened before the later past arrival.","Had the ambulance already left with the patient when her family reached the empty flat?",[],{"hint":20,"words":21,"correct":35,"wrongIndex":15,"corrections":36},"Which event happened first?",[22,23,24,25,26,27,23,28,29,30,31,32,23,33,34],"Has","the","ambulance","already","left","with","patient","when","her","family","reached","empty","flat?","Had",[35,37,38,39],"Have","Did","Does",{"id":41,"sentenceTemplate":42,"displayOrder":43,"explanation":44,"exampleSentence":45,"blanks":46,"payload":47},"01a01413-a0b8-75fb-8930-45de0313bbbc","The curtain rose only after all the actors had never taken their places.",1,"The actors took their places before the curtain rose, so use “had already taken”. The adverb sits between “had” and “taken”.","The curtain rose only after all the actors had already taken their places.",[],{"hint":48,"words":49,"correct":25,"wrongIndex":62,"corrections":63},"Check the adverb between “had” and the participle.",[50,51,52,53,54,55,23,56,57,58,59,60,61],"The","curtain","rose","only","after","all","actors","had","never","taken","their","places.",9,[25,64,65],"ever","yet",{"id":67,"sentenceTemplate":68,"displayOrder":69,"explanation":70,"exampleSentence":71,"blanks":72,"payload":73},"01a01413-a0b8-7637-8930-45de03d41b89","At eight that evening, the rescue team hasn't found the safe route, so the search continued.",2,"Use “hadn’t found” for something that was not complete by the past point at eight that evening.","At eight that evening, the rescue team hadn't found the safe route, so the search continued.",[],{"hint":74,"words":75,"correct":89,"wrongIndex":90,"corrections":91},"Check the negative auxiliary at the stated past time.",[76,77,78,79,23,80,81,82,83,23,84,85,86,23,87,88],"At","eight","that","evening,","rescue","team","hasn't","found","safe","route,","so","search","continued.","hadn't",7,[89,92,93,94],"haven't","didn't","wasn't",{"id":96,"sentenceTemplate":97,"displayOrder":98,"explanation":99,"exampleSentence":100,"blanks":101,"payload":102},"01a01413-a0b8-766f-8930-45de0444ce26","Had Priya ever write a poem before she joined the writing club?",3,"After “Had Priya”, use the past participle “written”; neither the base form “write” nor past-simple “wrote” completes the past perfect.","Had Priya ever written a poem before she joined the writing club?",[],{"hint":103,"words":104,"correct":114,"wrongIndex":98,"corrections":115},"Check the verb form after “Had”.",[35,105,64,106,107,108,109,110,111,23,112,113],"Priya","write","a","poem","before","she","joined","writing","club?","written",[114,116,117],"wrote","been",{"id":119,"sentenceTemplate":120,"displayOrder":9,"explanation":121,"exampleSentence":122,"blanks":123,"payload":124},"01a01413-a0b8-769f-8930-45de044ec88d","Had the guests arrived before the doors were locked? No, they wasn't arrived by then.","The negative answer uses “hadn’t” plus the past participle: “No, they hadn’t arrived by then.”","Had the guests arrived before the doors were locked? No, they hadn't arrived by then.",[],{"hint":125,"words":126,"correct":89,"wrongIndex":136,"corrections":137},"Check the auxiliary in the short answer.",[35,23,127,128,109,23,129,130,131,132,133,94,128,134,135],"guests","arrived","doors","were","locked?","No,","they","by","then.",11,[89,82,93,138],"weren't",{"id":140,"sentenceTemplate":141,"displayOrder":142,"explanation":143,"exampleSentence":144,"blanks":145,"payload":146},"01a01413-a0b8-76cf-8930-45de04d82b7b","The road was closed because a tree had fall during the night.",5,"Use the past participle “fallen” after “had”; the earlier fall explains the later road closure.","The road was closed because a tree had fallen during the night.",[],{"hint":147,"words":148,"correct":157,"wrongIndex":158,"corrections":159},"Check the irregular form after “had”.",[50,149,150,151,152,107,153,57,154,155,23,156],"road","was","closed","because","tree","fall","during","night.","fallen",8,[157,160,161],"fell","felled",{"id":163,"sentenceTemplate":164,"displayOrder":165,"explanation":166,"exampleSentence":167,"blanks":168,"payload":169},"01a01413-a0b8-7703-8930-45de057cb434","The 2024 trip was my first chance to see snow; before it, I had already seen snow.",6,"Because the trip was the first chance to see snow, use “had never seen”. The adverb goes between “had” and “seen”.","The 2024 trip was my first chance to see snow; before it, I had never seen snow.",[],{"hint":170,"words":171,"correct":58,"wrongIndex":184,"corrections":185},"Check the experience adverb after “had”.",[50,172,173,150,174,175,176,177,178,179,109,180,181,57,25,182,183],"2024","trip","my","first","chance","to","see","snow;","it,","I","seen","snow.",14,[58,64,186],"just",{"id":188,"sentenceTemplate":189,"displayOrder":90,"explanation":190,"exampleSentence":191,"blanks":192,"payload":193},"01a01413-a0b8-7743-8930-45de065ba6d0","During Monday’s interview, Lena said she was late because she had take the wrong card.","In this past report, taking the wrong card explains why Lena was late, so use “had taken”.","During Monday’s interview, Lena said she was late because she had taken the wrong card.",[],{"hint":194,"words":195,"correct":59,"wrongIndex":136,"corrections":205},"Check the verb form in the reported clause.",[196,197,198,199,200,110,150,201,152,110,57,202,23,203,204],"During","Monday’s","interview,","Lena","said","late","take","wrong","card.",[59,206,117],"took",{"id":208,"sentenceTemplate":209,"displayOrder":158,"explanation":210,"exampleSentence":211,"blanks":212,"payload":213},"01a01413-a0b8-7773-8930-45de07118c19","At breakfast, Theo was tired because he had been sleeps badly for two nights.","Past perfect continuous uses “had been” plus an -ing form, so “had been sleeping” emphasizes the earlier duration.","At breakfast, Theo was tired because he had been sleeping badly for two nights.",[],{"hint":214,"words":215,"correct":225,"wrongIndex":62,"corrections":226},"Check the form after “had been”.",[76,216,217,150,218,152,219,57,117,220,221,222,223,224],"breakfast,","Theo","tired","he","sleeps","badly","for","two","nights.","sleeping",[225,227,228,229],"slept","sleep","sleepy",{"id":231,"sentenceTemplate":232,"displayOrder":62,"explanation":233,"exampleSentence":234,"blanks":235,"payload":236},"01a01413-a0b8-779f-8930-45de07a8d8cd","The band did not begin until every musician had do the sound check.","After “had”, use the past participle “done” for the earlier completed sound check.","The band did not begin until every musician had done the sound check.",[],{"hint":237,"words":238,"correct":249,"wrongIndex":62,"corrections":250},"Check the verb form after “had”.",[50,239,240,241,242,243,244,245,57,246,23,247,248],"band","did","not","begin","until","every","musician","do","sound","check.","done",[249,240,251],"doing",{"id":253,"sentenceTemplate":254,"displayOrder":255,"explanation":256,"exampleSentence":257,"blanks":258,"payload":259},"01a01413-a0b8-77cf-8930-45de084c32f5","Marta said that before last Sunday’s drive, she’d has a full breakfast.",10,"“She’d” means “she had” here, and the past participle of “have” is “had”: she’d had breakfast.","Marta said that before last Sunday’s drive, she’d had a full breakfast.",[],{"hint":260,"words":261,"correct":57,"wrongIndex":158,"corrections":270},"Look at the verb group after the subject.",[262,200,78,109,263,264,265,266,267,107,268,269],"Marta","last","Sunday’s","drive,","she’d","has","full","breakfast.",[57,240,150,117],{"id":272,"sentenceTemplate":273,"displayOrder":136,"explanation":274,"exampleSentence":275,"blanks":276,"payload":277},"01a01413-a0b8-77ff-8930-45de09266612","When visitors entered, the cleaners have just finished their work, so the rooms were ready.","The visitors entered and the rooms were ready in the past, so the earlier action is “had just finished”.","When visitors entered, the cleaners had just finished their work, so the rooms were ready.",[],{"hint":278,"words":279,"correct":57,"wrongIndex":142,"corrections":289},"Check the auxiliary before “just finished”.",[280,281,282,23,283,284,186,285,60,286,86,23,287,130,288],"When","visitors","entered,","cleaners","have","finished","work,","rooms","ready.",[57,290,291,130],"would","could","\u002Fuploads\u002Fimages\u002Fgpimg_c87d2aae-72cf-454e-acbe-b7bf2adf06f9_hero.webp",{"title":294,"slug":295,"language":296,"level":297},"Past Perfect","past-perfect","en","B1"]