They are cleaning the room .改为一般疑问句并作否定回答

They are cleaning the room .改为一般疑问句并作否定回答 The students are cleaning the classroom?改为一般疑问句并作否定回答 The boys are cleaning the classroom now.(改为一般疑问句并作否定回答） The students are cleaning the classrook(改为一般疑问句并作肯定和否定回答） there are some girls in the room.改为一般疑问句并作否定回答 They are going to learn to play the violin改为一般疑问句并作否定回答 The students are cleaning the classroom . ( 改一般疑问句并作肯定和否定回答) There are many pictures in his room(改为一般疑问句,并作否定回答) There are many people in my room.(改为一般疑问句,并作肯定和否定回答) they like pears改为一般疑问句并作否定回答 they are his brothers改为一般疑问句并作否定回答 They are in No.1 middle school with Lily.改为一般疑问句,并作否定回答