[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"grammar-exercise-01a01413-9eec-7cf5-b19f-d4bf8910c1dd":3,"grammar-exercise-lesson-019b98ad-b43d-70eb-9bf8-98360d4b8745":271},["Reactive",4],{"id":5,"grammarPage":6,"title":7,"instructions":8,"displayOrder":9,"type":10,"questions":11,"ogImageUrl":270},"01a01413-9eec-7cf5-b19f-d4bf8910c1dd","\u002Fapi\u002Fgrammar_pages\u002F019b98ad-b43d-70eb-9bf8-98360d4b8745","Story Timelines - Find and Fix","One word in each sentence is wrong. Tap it, then choose the correction.",4,"find_and_fix",[12,34,57,77,100,123,144,165,188,210,232,254],{"id":13,"sentenceTemplate":14,"displayOrder":15,"explanation":16,"exampleSentence":17,"blanks":18,"payload":19},"01a01413-9eec-7e95-b19f-d4bf8957f5f7","Yesterday, Elin checked the alarm and lock the door.",0,"Two completed actions in the main narrative sequence both use the past simple, so 'lock' becomes 'locked' after 'checked'.","Yesterday, Elin checked the alarm and locked the door.",[],{"words":20,"correct":29,"wrongIndex":30,"corrections":31},[21,22,23,24,25,26,27,24,28],"Yesterday,","Elin","checked","the","alarm","and","lock","door.","locked",6,[29,32,33],"locking","locks",{"id":35,"sentenceTemplate":36,"displayOrder":37,"explanation":38,"exampleSentence":39,"blanks":40,"payload":41},"01a01413-9eec-7f2d-b19f-d4bf8a26b595","Rain is falling at eleven last night when the power failed.",1,"The rain was already in progress when the past event happened, so use the past continuous 'was falling'.","Rain was falling at eleven last night when the power failed.",[],{"words":42,"correct":53,"wrongIndex":37,"corrections":54},[43,44,45,46,47,48,49,50,24,51,52],"Rain","is","falling","at","eleven","last","night","when","power","failed.","was",[53,55,56],"were","had",{"id":58,"sentenceTemplate":59,"displayOrder":60,"explanation":61,"exampleSentence":62,"blanks":63,"payload":64},"01a01413-9eec-7f91-b19f-d4bf8a88a190","By the time we arrived, they have left the station.",2,"The departure happened before our past arrival, so the auxiliary at the faulty token must be 'had': 'they had left'.","By the time we arrived, they had left the station.",[],{"words":65,"correct":56,"wrongIndex":30,"corrections":74},[66,24,67,68,69,70,71,72,24,73],"By","time","we","arrived,","they","have","left","station.",[56,75,76],"has","would",{"id":78,"sentenceTemplate":79,"displayOrder":80,"explanation":81,"exampleSentence":82,"blanks":83,"payload":84},"01a01413-9eed-705d-97e4-f0c087eff7c0","Yesterday at ten, the cashier admit she had printed the receipts the previous evening.",3,"The admission is a completed main event at a stated past time, so use the past simple 'admitted'; 'had printed' marks the earlier action.","Yesterday at ten, the cashier admitted she had printed the receipts the previous evening.",[],{"words":85,"correct":95,"wrongIndex":96,"corrections":97},[86,46,87,24,88,89,90,56,91,24,92,24,93,94],"Yesterday","ten,","cashier","admit","she","printed","receipts","previous","evening.","admitted",5,[95,98,99],"admitting","admission",{"id":101,"sentenceTemplate":102,"displayOrder":9,"explanation":103,"exampleSentence":104,"blanks":105,"payload":106},"01a01413-9eed-70bd-97e4-f0c088cee061","When medics arrived, the climbers were shaking because they had been shiver for six hours.","The six-hour activity continued up to the medics’ arrival, so past perfect continuous requires the -ing form in 'had been shivering'.","When medics arrived, the climbers were shaking because they had been shivering for six hours.",[],{"words":107,"correct":118,"wrongIndex":119,"corrections":120},[108,109,69,24,110,55,111,112,70,56,113,114,115,116,117],"When","medics","climbers","shaking","because","been","shiver","for","six","hours.","shivering",11,[118,121,122],"shivered","shivers",{"id":124,"sentenceTemplate":125,"displayOrder":96,"explanation":126,"exampleSentence":127,"blanks":128,"payload":129},"01a01413-9eed-7115-97e4-f0c0893680b1","By noon, reviewers had finish all forty forms and filed the last one at 11:50.","Filing the last form confirms a completed result before noon, so past perfect requires the participle in 'had finished'.","By noon, reviewers had finished all forty forms and filed the last one at 11:50.",[],{"words":130,"correct":140,"wrongIndex":9,"corrections":141},[66,131,132,56,133,134,135,136,26,137,24,48,138,46,139],"noon,","reviewers","finish","all","forty","forms","filed","one","11:50.","finished",[140,142,143],"finishing","finishes",{"id":145,"sentenceTemplate":146,"displayOrder":30,"explanation":147,"exampleSentence":148,"blanks":149,"payload":150},"01a01413-9eed-716d-97e4-f0c089d14a02","By 2019, I had knew Inez for ten years, so I trusted her.","The past perfect of the state verb 'know' is 'had known'; 'knew' is the past-simple form, not the participle.","By 2019, I had known Inez for ten years, so I trusted her.",[],{"words":151,"correct":161,"wrongIndex":9,"corrections":162},[66,152,153,56,154,155,115,156,157,158,153,159,160],"2019,","I","knew","Inez","ten","years,","so","trusted","her.","known",[161,163,164],"know","knowing",{"id":166,"sentenceTemplate":167,"displayOrder":168,"explanation":169,"exampleSentence":170,"blanks":171,"payload":172},"01a01413-9eed-71c5-97e4-f0c08a1633f7","During childhood summers, the twins would always collected shells after each storm.",7,"'Would' describes this repeated past action and takes the base form 'collect'.","During childhood summers, the twins would always collect shells after each storm.",[],{"words":173,"correct":184,"wrongIndex":168,"corrections":185},[174,175,176,24,177,76,178,179,180,181,182,183],"During","childhood","summers,","twins","always","collected","shells","after","each","storm.","collect",[184,186,187],"collecting","collects",{"id":189,"sentenceTemplate":190,"displayOrder":191,"explanation":192,"exampleSentence":193,"blanks":194,"payload":195},"01a01413-9eed-721d-97e4-f0c08a7b049c","Back then, Maya use to own the cabin beside the mill.",8,"Use 'used to' for a past state such as owning a cabin. The final \u002Fd\u002F can be hard to hear, but it is required in writing.","Back then, Maya used to own the cabin beside the mill.",[],{"words":196,"correct":206,"wrongIndex":80,"corrections":207},[197,198,199,200,201,202,24,203,204,24,205],"Back","then,","Maya","use","to","own","cabin","beside","mill.","used",[206,208,209],"uses","using",{"id":211,"sentenceTemplate":212,"displayOrder":213,"explanation":214,"exampleSentence":215,"blanks":216,"payload":217},"01a01413-9eed-7275-97e4-f0c08b1c5e8b","At dusk, I was going to phoned the locksmith, but my battery died.",9,"The failed past intention uses 'was going to' followed by the base form 'phone'.","At dusk, I was going to phone the locksmith, but my battery died.",[],{"words":218,"correct":228,"wrongIndex":30,"corrections":229},[219,220,153,53,221,201,222,24,223,224,225,226,227],"At","dusk,","going","phoned","locksmith,","but","my","battery","died.","phone",[228,230,231],"phoning","phones",{"id":233,"sentenceTemplate":234,"displayOrder":235,"explanation":236,"exampleSentence":237,"blanks":238,"payload":239},"01a01413-9eed-72cd-97e4-f0c08c0f60e1","At noon, the couriers said they would arrived by six, but their vans came at eight.",10,"From the couriers' past viewpoint, six o'clock was later; 'would' must be followed by the base form 'arrive'.","At noon, the couriers said they would arrive by six, but their vans came at eight.",[],{"words":240,"correct":250,"wrongIndex":168,"corrections":251},[219,131,24,241,242,70,76,243,244,245,224,246,247,248,46,249],"couriers","said","arrived","by","six,","their","vans","came","eight.","arrive",[250,252,253],"arriving","arrives",{"id":255,"sentenceTemplate":256,"displayOrder":119,"explanation":257,"exampleSentence":258,"blanks":259,"payload":260},"01a01413-9eed-7325-97e4-f0c08c81d5ae","No sooner have we reached the roof than the alarm rang.","A finished past narrative uses the inverted form 'No sooner had we reached ... than ...'.","No sooner had we reached the roof than the alarm rang.",[],{"words":261,"correct":56,"wrongIndex":60,"corrections":268},[262,263,71,68,264,24,265,266,24,25,267],"No","sooner","reached","roof","than","rang.",[56,269,55],"did","\u002Fuploads\u002Fimages\u002Fgpimg_e037de19-96d7-4459-afb1-0911ddc38fc4_hero.webp",{"title":272,"slug":273,"language":274,"level":275},"Narrative tenses","narrative-tenses","en","B2"]