[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"external-grammar-232":3},{"payload":4,"id":86,"user":87,"level":93,"course":94,"activity":94,"activity_slug":95,"title":96,"topic":97,"tone":98,"stats":99,"created":102,"score":103,"is_favorite":104,"public":105,"is_external":105},{"assessments":5},[6,14,22,30,38,46,54,62,70,78],{"text":7,"topic":8,"choices":9},"I can't find my keys. I think I .......... them on the train.","Present Perfect",[10,11,12,13],"have been leaving","left","had left","have left",{"text":15,"topic":16,"choices":17},"While we .......... dinner, the neighbours started arguing loudly.","Past Continuous",[18,19,20,21],"were having","had","had been having","have had",{"text":23,"topic":24,"choices":25},"If you .......... earlier, you .......... the last bus.","Conditionals",[26,27,28,29],"had left / would have caught","leave / will catch","were leaving / would catch","left / would catch",{"text":31,"topic":32,"choices":33},"The final decision .......... by the board next Monday.","Passive Voice",[34,35,36,37],"will make","has been made","will be made","is made",{"text":39,"topic":40,"choices":41},"You .......... have told me you were running late; I waited for an hour.","Modal Verbs",[42,43,44,45],"must","can","should","might",{"text":47,"topic":48,"choices":49},"Emma said, \"I’m not feeling well today.\" → Emma said that she .......... well that day.","Reported Speech",[50,51,52,53],"wasn't feeling","hadn't felt","won't feel","isn't feeling",{"text":55,"topic":56,"choices":57},"This is the colleague .......... helped me prepare the presentation.","Relative Clauses",[58,59,60,61],"which","whom","whose","who",{"text":63,"topic":64,"choices":65},"She works as .......... editor for an online magazine.","Articles",[66,67,68,69],"-","a","the","an",{"text":71,"topic":72,"choices":73},"We had to .......... the meeting because the client was stuck in traffic.","Phrasal Verbs",[74,75,76,77],"put out","put on","put off","put up",{"text":79,"topic":80,"choices":81},"Choose the sentence with the correct word order.","Word Order",[82,83,84,85],"I have never seen such a convincing argument.","Never I have seen such a convincing argument.","I have seen never such a convincing argument.","I never have seen such a convincing argument.",232,{"id":88,"username":89,"first_name":90,"last_name":91,"image":92},21855,"sasha-shakh","Саша","Шах","https://api.useofenglish.ai/static/img/users/default-profile-picture.jpg","B2","Grammar","grammar","Mixed Exercise","Create a mixed exercise for grammar in use practice","Standard",{"times_played":100,"num_favorites":101},7,1,"2026-04-07T11:32:58",null,false,true]