[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"grammar-exercise-019faa5f-88b8-7609-9a31-5cba1f8639e4":3,"grammar-exercise-lesson-019b98ad-b43d-70eb-9bf8-98360d4b8745":161},["Reactive",4],{"id":5,"grammarPage":6,"title":7,"instructions":8,"displayOrder":9,"type":10,"questions":11,"ogImageUrl":160},"019faa5f-88b8-7609-9a31-5cba1f8639e4","\u002Fapi\u002Fgrammar_pages\u002F019b98ad-b43d-70eb-9bf8-98360d4b8745","The Dinner Mystery — Build the Story","Tap the words in the correct order to build each part of the story. One extra word does not belong.",3,"sentence_builder",[12,31,45,60,74,88,103,117,131,145],{"id":13,"sentenceTemplate":14,"displayOrder":15,"explanation":16,"exampleSentence":17,"blanks":18},"019fc2c4-a657-7d68-8113-d9899e359fda","Build the sentence: __1__",0,"Past simple marks the later reference point, while past perfect shows that the safe was opened before dinner began.","By the time we arrived, someone had unlocked the door.",[19],{"id":20,"blankNumber":21,"options":22},"019fc2c4-a657-7d10-8113-d9899d4aa41b",1,[23,27],{"id":24,"optionText":25,"isCorrect":26,"displayOrder":15},"019fc2c4-a657-7c7c-8113-d9899bfb09d2","By the time dinner began, someone had opened the wall safe.",true,{"id":28,"optionText":29,"isCorrect":30,"displayOrder":21},"019fc2c4-a657-7cdc-8113-d9899ca6b9c8","was",false,{"id":32,"sentenceTemplate":14,"displayOrder":21,"explanation":33,"exampleSentence":34,"blanks":35},"019fc2c4-a657-7e3c-8113-d989a0b52bad","Past continuous sets the background action, and past simple introduces the event that interrupts it.","While we were talking, the fire alarm suddenly rang.",[36],{"id":37,"blankNumber":21,"options":38},"019fc2c4-a657-7e04-8113-d989a000e696",[39,42],{"id":40,"optionText":41,"isCorrect":30,"displayOrder":15},"019fc2c4-a657-7dbc-8113-d9899ea6bfb2","had",{"id":43,"optionText":44,"isCorrect":26,"displayOrder":21},"019fc2c4-a657-7de0-8113-d9899f2a9ceb","While the guests were eating, the lights went out.",{"id":46,"sentenceTemplate":14,"displayOrder":47,"explanation":48,"exampleSentence":49,"blanks":50},"019fc2c4-a657-7f10-8113-d989a255b6b8",2,"Came is the next main event. Past perfect then shifts the focus back to the necklace disappearing earlier, while the room was dark.","When I returned, someone had taken my bag.",[51],{"id":52,"blankNumber":21,"options":53},"019fc2c4-a657-7ed8-8113-d989a23e4e62",[54,57],{"id":55,"optionText":56,"isCorrect":26,"displayOrder":15},"019fc2c4-a657-7e84-8113-d989a17a975d","When the lights came back on, the necklace had disappeared.",{"id":58,"optionText":59,"isCorrect":30,"displayOrder":21},"019fc2c4-a657-7ea8-8113-d989a225c2c0","did",{"id":61,"sentenceTemplate":14,"displayOrder":9,"explanation":62,"exampleSentence":63,"blanks":64},"019fc2c4-a658-702c-9f45-a12377e8032d","Past continuous describes the host’s visible state, while past perfect continuous explains the ongoing action that caused it.","He was exhausted because he had been working all night.",[65],{"id":66,"blankNumber":21,"options":67},"019fc2c4-a657-7f98-8113-d989a3930b71",[68,71],{"id":69,"optionText":70,"isCorrect":30,"displayOrder":15},"019fc2c4-a657-7f54-8113-d989a323e030","were",{"id":72,"optionText":73,"isCorrect":26,"displayOrder":21},"019fc2c4-a657-7f78-8113-d989a36fb517","The host was trembling because she had been guarding it all evening.",{"id":75,"sentenceTemplate":14,"displayOrder":76,"explanation":77,"exampleSentence":78,"blanks":79},"019fc2c4-a658-70ec-9f45-a12379af288e",4,"Past continuous creates the background activity, and past simple brings the detective into the main sequence. Use singular \"was\" with \"everyone\", not \"were\".","As the crowd was leaving, the police arrived.",[80],{"id":81,"blankNumber":21,"options":82},"019fc2c4-a658-70b8-9f45-a123797df030",[83,86],{"id":84,"optionText":85,"isCorrect":26,"displayOrder":15},"019fc2c4-a658-7074-9f45-a1237872bbd3","As everyone was searching the room, the detective arrived.",{"id":87,"optionText":70,"isCorrect":30,"displayOrder":21},"019fc2c4-a658-7098-9f45-a12378a5d71c",{"id":89,"sentenceTemplate":14,"displayOrder":90,"explanation":91,"exampleSentence":92,"blanks":93},"019fc2c4-a658-71a8-9f45-a1237c3eb94f",5,"Noticed is the main event. Past perfect marks the glove being left before the detective noticed it.","She discovered that someone had moved the painting.",[94],{"id":95,"blankNumber":21,"options":96},"019fc2c4-a658-7170-9f45-a1237b6bddb8",[97,100],{"id":98,"optionText":99,"isCorrect":30,"displayOrder":15},"019fc2c4-a658-712c-9f45-a1237a53e0dd","have",{"id":101,"optionText":102,"isCorrect":26,"displayOrder":21},"019fc2c4-a658-7150-9f45-a1237b0c2c6e","He noticed that someone had left a wet glove beside the safe.",{"id":104,"sentenceTemplate":14,"displayOrder":105,"explanation":106,"exampleSentence":107,"blanks":108},"019fc2c4-a658-7264-9f45-a1237df0021b",6,"Use past continuous for two simultaneous background actions. The rain and the questioning were both in progress.","Wind was blowing while the officers were searching outside.",[109],{"id":110,"blankNumber":21,"options":111},"019fc2c4-a658-722c-9f45-a1237d1f8c7a",[112,115],{"id":113,"optionText":114,"isCorrect":26,"displayOrder":15},"019fc2c4-a658-71e8-9f45-a1237c581918","Rain was pouring while the guests were answering questions.",{"id":116,"optionText":41,"isCorrect":30,"displayOrder":21},"019fc2c4-a658-720c-9f45-a1237ce84814",{"id":118,"sentenceTemplate":14,"displayOrder":119,"explanation":120,"exampleSentence":121,"blanks":122},"019fc2c4-a658-7318-9f45-a1237ffcde4c",7,"Use past simple for successive completed actions that move the investigation forward.","The officer collected the evidence and questioned the witness.",[123],{"id":124,"blankNumber":21,"options":125},"019fc2c4-a658-72e4-9f45-a1237f7a2343",[126,128],{"id":127,"optionText":29,"isCorrect":30,"displayOrder":15},"019fc2c4-a658-72a4-9f45-a1237ec7177b",{"id":129,"optionText":130,"isCorrect":26,"displayOrder":21},"019fc2c4-a658-72c4-9f45-a1237f1e5560","After examining the glove, the detective checked the open window.",{"id":132,"sentenceTemplate":14,"displayOrder":133,"explanation":134,"exampleSentence":135,"blanks":136},"019fc2c4-a658-73dc-9f45-a12381a46d88",8,"Recognized carries the main story forward. Past perfect shows that the earlier sighting allowed the detective to identify the mark.","I knew the tune because I had heard it before.",[137],{"id":138,"blankNumber":21,"options":139},"019fc2c4-a658-73a8-9f45-a12380db1520",[140,143],{"id":141,"optionText":142,"isCorrect":26,"displayOrder":15},"019fc2c4-a658-7364-9f45-a123806402de","He recognized the mark because he had seen it on the butler's coat.",{"id":144,"optionText":99,"isCorrect":30,"displayOrder":21},"019fc2c4-a658-7388-9f45-a123807d8f5a",{"id":146,"sentenceTemplate":14,"displayOrder":147,"explanation":148,"exampleSentence":149,"blanks":150},"019fc2c4-a658-7490-9f45-a12383a1fa85",9,"Past perfect continuous emphasizes an ongoing earlier action, while past simple returns to the main event when the detective found him.","They had been waiting nearby when the guard discovered them.",[151],{"id":152,"blankNumber":21,"options":153},"019fc2c4-a658-745c-9f45-a12382ae4ded",[154,157],{"id":155,"optionText":156,"isCorrect":30,"displayOrder":15},"019fc2c4-a658-741c-9f45-a12381aebd31","has",{"id":158,"optionText":159,"isCorrect":26,"displayOrder":21},"019fc2c4-a658-743c-9f45-a12381edef33","The butler had been hiding when the detective found him.","\u002Fuploads\u002Fimages\u002Fgpimg_542e5d3a-f325-4c84-a29c-8b2d825e886a_hero.webp",{"title":162,"slug":163,"language":164,"level":165},"Narrative tenses","narrative-tenses","en","B2"]