They cleaned the kitchen by themselves

They cleaned the kitchen by themselves cleaned the Have they cleaned the classroom?（做肯定回答） They cleaned the classroom yesterday.改成一般疑问句 They have cleaned the room already.改为一般疑问句 They have cleaned the room already.改为一般疑问句 （）内只能填一个单词（ ）cleaned the classroom（ The rock kit cena ass The students have cleaned the classroom,_______?A.so they B.don't C.have they D.haven't they They built the bridge (last year)对括号提问 I (cleaned the room) last night They have just cleaned the windows ,so the room looks much__________ ( bright ). the house was cleaned how dirty the tables are ,they need ---------A to clean B clean C cleaning D cleaned they cleaned the classroom yesterday afternoon,（ ）完成反意疑问句 it was they that/who cleaned the classroom yesterday.我说是翻译 They started _____ the classroom twenty minutes ago. A. clean B. cleaning C. cleans D. cleaned They cleaned the room by( ) A .himself B .herself C.themselves They could help( )the city parks.A.to clean up B.cleaned up C.cleaning up they have swpet the filoor and cleaned the window.(改为否定句） they____ swpet the filoor ____clean They just cleaned the windows.So the room looks_.A.more bright B.much brighterThanks very much.