[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"exercise-1675":3},{"payload":4,"id":43,"user":44,"level":50,"course":51,"activity":52,"activity_slug":53,"title":5,"topic":54,"tone":55,"stats":56,"created":59,"score":60,"is_favorite":61,"public":62,"is_external":61},{"title":5,"assessments":6},"Mixed Signs Practice",[7,15,23,30,37],{"tag":8,"sign":9,"choices":10,"question":14},"Prohibition","Please wear headphones for videos. Sound from phones and tablets must be turned off in the library.",[11,12,13],"You can watch videos in the library as long as you sit in the quiet study area.","Sound from phones and tablets must be turned on in the library if you wear headphones.","You have to keep your device silent here, and you should use headphones if you want to watch something.","What does this sign suggest?",{"tag":16,"sign":17,"choices":18,"question":22},"Obligation","Swimming pool: Children under 14 must be with an adult at all times. No exceptions.",[19,20,21],"Children under 14 must be adults at all times, with no exceptions.","Children under 14 can swim alone if they can already swim well.","Anyone younger than 14 has to stay with an adult while they are in the pool area.","What does the text say?",{"tag":24,"sign":25,"choices":26,"question":14},"Advice","Café notice: Please queue here. You cannot be served if you skip the line.",[27,28,29],"You can order at your table if the queue is too long.","Please queue here so you can be served if you skip the line.","You should wait in the line, or the staff may refuse to serve you.",{"tag":31,"sign":32,"choices":33,"question":22},"Warning","Road sign: School zone. Drivers should slow down between 8:00–9:00 and 14:30–15:30.",[34,35,36],"You are advised to reduce your speed at certain times when children may be arriving or leaving school.","Drivers should slow down between 8:00–9:00 and 14:30–15:30 because the road is closed.","You must slow down only at 8:00 and 14:30 exactly.",{"tag":16,"sign":38,"choices":39,"question":14},"Gym rule: You must book a class online before arriving. Walk-ins are not allowed.",[40,41,42],"Walk-ins are not allowed, so you must book online after arriving.","You are allowed to join the class without booking if there is space.","You have to reserve your place on the website in advance; you can’t just turn up and join.",1675,{"id":45,"username":46,"first_name":47,"last_name":48,"image":49},29942,"linlei-thu","Linlei","Thu","https://api.useofenglish.ai/static/img/users/default-profile-picture.jpg","B1","Reading","Signs","signs","I want to listen and understand the meaning, and after that I want to do a test.","Standard",{"times_played":57,"num_favorites":58},4,0,"2026-10-28T13:39:13",null,false,true]