[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"external-grammar-144":3},{"payload":4,"id":77,"user":78,"level":84,"course":85,"activity":85,"activity_slug":86,"title":8,"topic":87,"tone":88,"stats":89,"created":92,"score":93,"is_favorite":94,"public":95,"is_external":94},{"assessments":5},[6,14,21,28,35,42,49,56,63,70],{"text":7,"topic":8,"choices":9},"I can't find my keys. I .......... them somewhere.","Present Perfect",[10,11,12,13],"has lost","lost","am losing","have lost",{"text":15,"topic":8,"choices":16},"She .......... in this company since 2020.",[17,18,19,20],"has worked","has work","worked","is working",{"text":22,"topic":8,"choices":23},".......... you ever .......... to Japan?",[24,25,26,27],"Did / go","Have / went","Have / been","Are / been",{"text":29,"topic":8,"choices":30},"We .......... our homework yet, so we can't go out.",[31,32,33,34],"didn't finish","haven't finished","haven't finish","don't finish",{"text":36,"topic":8,"choices":37},"He has .......... eaten sushi before.",[38,39,40,41],"ago","still","never","yet",{"text":43,"topic":8,"choices":44},"Look! Someone .......... the lights on. The room is bright now.",[45,46,47,48],"turned","is turning","has turned","have turned",{"text":50,"topic":8,"choices":51},"They .......... each other for ten years.",[52,53,54,55],"know","have knew","have known","knew",{"text":57,"topic":8,"choices":58},"I'm hungry because I .......... lunch yet.",[59,60,61,62],"don't have","didn't have","haven't had","haven't have",{"text":64,"topic":8,"choices":65},"She .......... just .......... her email, so she knows the news.",[66,67,68,69],"is / read","has / reads","did / read","has / read",{"text":71,"topic":8,"choices":72},"I .......... already .......... the tickets online.",[73,74,75,76],"am / buying","have / buy","bought / already","have / bought",144,{"id":79,"username":80,"first_name":81,"last_name":82,"image":83},21237,"maria-chacon","María","Chacón","https://api.useofenglish.ai/static/img/users/default-profile-picture.jpg","B1","Grammar","grammar","Create a grammar exercise focusing on 'Present Perfect'","Standard",{"times_played":90,"num_favorites":91},11,0,"2026-03-23T05:32:13",null,false,true]