[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"grammar-exercise-01a01413-ae4c-73ef-b529-180e354eb4f9":3,"grammar-exercise-lesson-019b6fd9-fca0-721e-98a1-8dae306fa3a8":266},["Reactive",4],{"id":5,"grammarPage":6,"title":7,"instructions":8,"displayOrder":9,"type":10,"questions":11,"ogImageUrl":265},"01a01413-ae4c-73ef-b529-180e354eb4f9","\u002Fapi\u002Fgrammar_pages\u002F019b6fd9-fca0-721e-98a1-8dae306fa3a8","Zero Conditional - Find and Fix the Mistake","One word in each sentence is wrong. Tap it, then choose the correction.",4,"find_and_fix",[12,41,63,83,105,124,144,165,188,207,230,246],{"id":13,"sentenceTemplate":14,"displayOrder":15,"explanation":16,"exampleSentence":17,"blanks":18,"payload":19},"01a01413-ae4c-758f-b529-180e35d955ec","If lemon juice mixes with baking soda, the mixture both bubbles and produce gas.",0,"This scientific fact uses the present simple. In the pair 'both bubbles and produces', both verbs agree with the singular subject 'the mixture'.","If lemon juice mixes with baking soda, the mixture both bubbles and produces gas.",[],{"hint":20,"words":21,"correct":36,"wrongIndex":37,"corrections":38},"One verb does not agree with its subject.",[22,23,24,25,26,27,28,29,30,31,32,33,34,35],"If","lemon","juice","mixes","with","baking","soda,","the","mixture","both","bubbles","and","produce","gas.","produces",12,[36,39,40],"produced","producing",{"id":42,"sentenceTemplate":43,"displayOrder":44,"explanation":45,"exampleSentence":46,"blanks":47,"payload":48},"01a01413-ae4c-75f3-b529-180e368c8ffe","Whenever this sensor detect smoke, the alarm sounds.",1,"A repeated cause uses the present simple. The singular subject 'this sensor' takes 'detects'.","Whenever this sensor detects smoke, the alarm sounds.",[],{"hint":49,"words":50,"correct":58,"wrongIndex":59,"corrections":60},"Check the verb in the whenever-clause.",[51,52,53,54,55,29,56,57],"Whenever","this","sensor","detect","smoke,","alarm","sounds.","detects",3,[58,61,62],"detected","detecting",{"id":64,"sentenceTemplate":65,"displayOrder":66,"explanation":67,"exampleSentence":68,"blanks":69,"payload":70},"01a01413-ae4c-7633-b529-180e37177281","If it rains, this grass get wet.",2,"For a general truth, use the present simple in the result. The singular noun phrase 'this grass' takes 'gets'.","If it rains, this grass gets wet.",[],{"hint":71,"words":72,"correct":78,"wrongIndex":79,"corrections":80},"Check how a general result is formed.",[22,73,74,52,75,76,77],"it","rains,","grass","get","wet.","gets",5,[78,81,82],"got","getting",{"id":84,"sentenceTemplate":85,"displayOrder":59,"explanation":86,"exampleSentence":87,"blanks":88,"payload":89},"01a01413-ae4c-766b-b529-180e3799f24f","If the card reader is offline, visitors can't enters the building.","After 'can't', use the base verb 'enter' for this usual result.","If the card reader is offline, visitors can't enter the building.",[],{"hint":90,"words":91,"correct":100,"wrongIndex":101,"corrections":102},"One verb form does not fit the usual result.",[22,29,92,93,94,95,96,97,98,29,99],"card","reader","is","offline,","visitors","can't","enters","building.","enter",8,[100,103,104],"entered","entering",{"id":106,"sentenceTemplate":107,"displayOrder":9,"explanation":108,"exampleSentence":109,"blanks":110,"payload":111},"01a01413-ae4c-769f-b529-180e38479aaf","If a warning light appears, checks the engine.","The result is an instruction, so use the imperative base form 'check'.","If a warning light appears, check the engine.",[],{"hint":112,"words":113,"correct":120,"wrongIndex":79,"corrections":121},"One verb form does not fit an instruction.",[22,114,115,116,117,118,29,119],"a","warning","light","appears,","checks","engine.","check",[120,122,123],"checked","checking",{"id":125,"sentenceTemplate":126,"displayOrder":79,"explanation":127,"exampleSentence":128,"blanks":129,"payload":130},"01a01413-ae4c-76df-b529-180e38da644e","If a pan gets too hot, don't touches the handle.","A negative instruction uses 'don't' plus the base verb: 'don't touch'.","If a pan gets too hot, don't touch the handle.",[],{"hint":131,"words":132,"correct":139,"wrongIndex":140,"corrections":141},"Check how a negative instruction is formed.",[22,114,133,78,134,135,136,137,29,138],"pan","too","hot,","don't","touches","handle.","touch",7,[139,142,143],"touched","touching",{"id":145,"sentenceTemplate":146,"displayOrder":147,"explanation":148,"exampleSentence":149,"blanks":150,"payload":151},"01a01413-ae4c-7747-b529-180e39136034","If the ticket machine doesn't accepts coins, use a card.",6,"After 'doesn't', use the base verb 'accept'. The result correctly uses the imperative 'use'.","If the ticket machine doesn't accept coins, use a card.",[],{"hint":152,"words":153,"correct":161,"wrongIndex":79,"corrections":162},"Check the form of the negative condition.",[22,29,154,155,156,157,158,159,114,160],"ticket","machine","doesn't","accepts","coins,","use","card.","accept",[161,163,164],"accepted","accepting",{"id":166,"sentenceTemplate":167,"displayOrder":140,"explanation":168,"exampleSentence":169,"blanks":170,"payload":171},"01a01413-ae4c-77a3-b529-180e3a040d74","This screen stays on if there are a reliable power supply.","Use 'there is' before the singular noun phrase 'a reliable power supply'. The if-clause comes second, so there is no comma before it.","This screen stays on if there is a reliable power supply.",[],{"hint":172,"words":173,"correct":94,"wrongIndex":147,"corrections":184},"Check the form of the condition.",[174,175,176,177,178,179,180,114,181,182,183],"This","screen","stays","on","if","there","are","reliable","power","supply.",[94,185,186,187],"am","being","been",{"id":189,"sentenceTemplate":190,"displayOrder":101,"explanation":191,"exampleSentence":192,"blanks":193,"payload":194},"01a01413-ae4c-77fb-b529-180e3aa771fb","What do you does if your phone freezes?","A general question uses 'What do you do' before the present-simple if-clause.","What do you do if your phone freezes?",[],{"hint":195,"words":196,"correct":198,"wrongIndex":59,"corrections":204},"Check the present-simple question pattern.",[197,198,199,200,178,201,202,203],"What","do","you","does","your","phone","freezes?",[198,205,206],"did","doing",{"id":208,"sentenceTemplate":209,"displayOrder":210,"explanation":211,"exampleSentence":212,"blanks":213,"payload":214},"01a01413-ae4c-785f-b529-180e3ad5d2d0","If Nora feels dizzy, she sits down and don't stand up quickly.",9,"The singular subject 'she' takes 'doesn't' plus the base verb 'stand' in this usual result.","If Nora feels dizzy, she sits down and doesn't stand up quickly.",[],{"hint":215,"words":216,"correct":156,"wrongIndex":101,"corrections":226},"Check agreement in the usual result.",[22,217,218,219,220,221,222,33,136,223,224,225],"Nora","feels","dizzy,","she","sits","down","stand","up","quickly.",[156,227,228,229],"not","never","no",{"id":231,"sentenceTemplate":232,"displayOrder":233,"explanation":234,"exampleSentence":235,"blanks":236,"payload":237},"01a01413-ae4c-78bb-b529-180e3b0915f0","If glue spills and get on your clothes, wash it off quickly.",10,"The singular subject 'glue' takes both present-simple verbs 'spills' and 'gets'. The result is an imperative.","If glue spills and gets on your clothes, wash it off quickly.",[],{"hint":20,"words":238,"correct":78,"wrongIndex":9,"corrections":244},[22,239,240,33,76,177,201,241,242,73,243,225],"glue","spills","clothes,","wash","off",[78,81,82,245],"gotten",{"id":247,"sentenceTemplate":248,"displayOrder":249,"explanation":250,"exampleSentence":251,"blanks":252,"payload":253},"01a01413-ae4c-7913-b529-180e3bbd67df","If this printer often jam, restart it.",11,"Use the present simple in a general if-clause. The singular subject 'this printer' takes 'jams'.","If this printer often jams, restart it.",[],{"hint":254,"words":255,"correct":261,"wrongIndex":9,"corrections":262},"Check how a general condition is formed.",[22,52,256,257,258,259,260],"printer","often","jam,","restart","it.","jams,",[261,263,264],"jammed,","jamming,","\u002Fuploads\u002Fimages\u002Fgpimg_c505e079-de3d-4551-9a33-476764df263c_hero.webp",{"title":267,"slug":268,"language":269,"level":270},"Zero Conditional","zero-conditional","en","A2"]