改被动语态They clean their classroom every day.

改被动语态They clean their classroom every day. 改被动语态 They have found ways to make waste water clean. we must keep our classroom clean改被动语态 We should keep our room clean 改被动语态 do you clean your classroom every day(改被动语态 They often clean their classroom after school变被动语态 改被动语态：They write the business letters in English Will they take the books?(改被动语态） they should do the work at once改被动语态 They make machines in that factory.改被动语态 How soon will they finish these highrises?改被动语态 What decision have they made?改被动语态 They had lunch at school yesterday.改被动语态 They teach English in thrie school (改被动语态) They played games yesterday.改为被动语态怎么改? 改被动语态 What made them so worried?改被动语态,How soon will they finish their homework?改被动语态 My father asks me to clean the room把这句话改成被动语态怎么改