[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"grammar-exercise-01a01413-a3ec-7a32-8030-4e7f88983b08":3,"grammar-exercise-lesson-019b7aad-7c27-7305-9ac7-f0b77f08ae5d":209},["Reactive",4],{"id":5,"grammarPage":6,"title":7,"instructions":8,"displayOrder":9,"type":10,"questions":11,"ogImageUrl":208},"01a01413-a3ec-7a32-8030-4e7f88983b08","\u002Fapi\u002Fgrammar_pages\u002F019b7aad-7c27-7305-9ac7-f0b77f08ae5d","Prepositions of Time - Find and Fix","One word in each sentence is wrong. Tap it, then choose the correction.",5,"find_and_fix",[12,39,54,76,99,122,138,157,172,194],{"id":13,"sentenceTemplate":14,"displayOrder":15,"explanation":16,"exampleSentence":17,"blanks":18,"payload":19},"01a01413-a3ec-7b82-8030-4e7f89467a0d","The course starts in September, and the first class begins during 9:00.",0,"Use 'in' with a month and 'at' with an exact clock time.","The course starts in September, and the first class begins at 9:00.",[],{"words":20,"correct":33,"wrongIndex":34,"corrections":35},[21,22,23,24,25,26,27,28,29,30,31,32],"The","course","starts","in","September,","and","the","first","class","begins","during","9:00.","at",10,[33,36,37,38],"on","since","until",{"id":40,"sentenceTemplate":41,"displayOrder":42,"explanation":43,"exampleSentence":44,"blanks":45,"payload":46},"01a01413-a3ec-7bee-8030-4e7f8966595f","Our one-hour safety class begins in Tuesday afternoon.",1,"Use 'on' with a named day plus a part of the day: 'on Tuesday afternoon'.","Our one-hour safety class begins on Tuesday afternoon.",[],{"words":47,"correct":36,"wrongIndex":9,"corrections":53},[48,49,50,29,30,24,51,52],"Our","one-hour","safety","Tuesday","afternoon.",[36,33,37,38],{"id":55,"sentenceTemplate":56,"displayOrder":57,"explanation":58,"exampleSentence":59,"blanks":60,"payload":61},"01a01413-a3ec-7c2a-8030-4e7f8976514f","I always pack my suitcase before leave home.",2,"Use an -ing form when 'before' is not followed by a separate subject: 'before leaving home'.","I always pack my suitcase before leaving home.",[],{"words":62,"correct":71,"wrongIndex":72,"corrections":73},[63,64,65,66,67,68,69,70],"I","always","pack","my","suitcase","before","leave","home.","leaving",6,[71,74,75],"left","leaves",{"id":77,"sentenceTemplate":78,"displayOrder":79,"explanation":80,"exampleSentence":81,"blanks":82,"payload":83},"01a01413-a3ec-7c62-8030-4e7f8a43f085","I have lived in this flat for 2021, and my sister has lived here for three years.",3,"Use 'since' with the starting point 2021. Use 'for' with the length of time 'three years'.","I have lived in this flat since 2021, and my sister has lived here for three years.",[],{"words":84,"correct":37,"wrongIndex":72,"corrections":96},[63,85,86,24,87,88,89,90,26,66,91,92,86,93,89,94,95],"have","lived","this","flat","for","2021,","sister","has","here","three","years.",[37,31,97,98],"ago","by",{"id":100,"sentenceTemplate":101,"displayOrder":102,"explanation":103,"exampleSentence":104,"blanks":105,"payload":106},"01a01413-a3ec-7c9a-8030-4e7f8a47e62f","The lights went out during we were eating, but the cook stayed calm during the power cut.",4,"Use 'while' before a subject and verb: 'while we were eating'. Use 'during' before the noun phrase 'the power cut'.","The lights went out while we were eating, but the cook stayed calm during the power cut.",[],{"words":107,"correct":120,"wrongIndex":102,"corrections":121},[21,108,109,110,31,111,112,113,114,27,115,116,117,31,27,118,119],"lights","went","out","we","were","eating,","but","cook","stayed","calm","power","cut.","while",[120,89,33,36],{"id":123,"sentenceTemplate":124,"displayOrder":9,"explanation":125,"exampleSentence":126,"blanks":127,"payload":128},"01a01413-a3ec-7cca-8030-4e7f8ae2d88c","Please submit the form until Friday, but keep the receipt until the course ends.","Use 'by Friday' for the submission deadline. 'Keep ... until' describes an action that continues up to an event.","Please submit the form by Friday, but keep the receipt until the course ends.",[],{"words":129,"correct":98,"wrongIndex":102,"corrections":137},[130,131,27,132,38,133,114,134,27,135,38,27,22,136],"Please","submit","form","Friday,","keep","receipt","ends.",[98,37,97,120],{"id":139,"sentenceTemplate":140,"displayOrder":72,"explanation":141,"exampleSentence":142,"blanks":143,"payload":144},"01a01413-a3ec-7cfe-8030-4e7f8bb5516a","The film started exactly as scheduled, so it began in time.","'On time' means at the scheduled moment; 'in time' means early enough before it is too late.","The film started exactly as scheduled, so it began on time.",[],{"words":145,"correct":36,"wrongIndex":155,"corrections":156},[21,146,147,148,149,150,151,152,153,24,154],"film","started","exactly","as","scheduled,","so","it","began","time.",9,[36,33,98,31],{"id":158,"sentenceTemplate":159,"displayOrder":160,"explanation":161,"exampleSentence":162,"blanks":163,"payload":164},"01a01413-a3ec-7d2e-8030-4e7f8bbe1773","I lived in Hamburg ago I moved to Berlin in 2023.",7,"Use 'before' to compare two past events and introduce a clause. 'Ago' follows a length of time and counts back from now.","I lived in Hamburg before I moved to Berlin in 2023.",[],{"words":165,"correct":68,"wrongIndex":102,"corrections":171},[63,86,24,166,97,63,167,168,169,24,170],"Hamburg","moved","to","Berlin","2023.",[68,31,33,98],{"id":173,"sentenceTemplate":174,"displayOrder":175,"explanation":176,"exampleSentence":177,"blanks":178,"payload":179},"01a01413-a3ec-7d5e-8030-4e7f8bf78024","The clinic is open from nine until five, and the café serves breakfast from seven at ten.",8,"Use 'from ... to' for the café's full breakfast period. 'From ... until' is also correct, as the clinic hours show.","The clinic is open from nine until five, and the café serves breakfast from seven to ten.",[],{"words":180,"correct":168,"wrongIndex":192,"corrections":193},[21,181,182,183,184,185,38,186,26,27,187,188,189,184,190,33,191],"clinic","is","open","from","nine","five,","café","serves","breakfast","seven","ten.",15,[168,36,98,37],{"id":195,"sentenceTemplate":196,"displayOrder":155,"explanation":197,"exampleSentence":198,"blanks":199,"payload":200},"01a01413-a3ec-7d92-8030-4e7f8c79ddba","The office closes in lunchtime every weekday.","Use the fixed expression 'at lunchtime' for this point in the daily schedule.","The office closes at lunchtime every weekday.",[],{"words":201,"correct":33,"wrongIndex":79,"corrections":207},[21,202,203,24,204,205,206],"office","closes","lunchtime","every","weekday.",[33,36,37],"\u002Fuploads\u002Fimages\u002Fgpimg_0e5cae4a-56ba-478d-ac50-ba914caee5c2_hero.webp",{"title":210,"slug":211,"language":212,"level":213},"Prepositions of time (A2)","preposition-of-place-a2","en","A2"]