they are cleaning （their classroom） 对括号里面部分提问

They are cleaning the house. Milk bottles need cleaning thoroughly before they are used again,___ they?don't mustn't aren't They are cleaning the room 对 cleaning the room提问 They are cleaning _____ the dormitory they[ ]the classroom now.are cleaing all are all cleaning all are cleaning They are cleaning the room now变为特殊疑问句 将They are cleaning the window.改为一般疑问句 They are cleaning the room now.改成被动语态 They are cleaning the room 对 the room提问 They are (cleaning the room).对括号里面的提问. They are cleaning the classroom.(改为一般疑问句） They are cleaning the window改成否定句 at this moment,they are cleaning the classroom错那 求 they are cleaning my room.的问句 are,windows,they,cleaning,the怎样组成句 改错 At moment,they are cleaning the classroom. 改病句：At moment,they are cleaning the classroom. They students are cleaning the classroom 对cleaning the class提问