The students are cleaning the classroom . ( 改一般疑问句并作肯定和否定回答)

The students are cleaning the classroom . ( 改一般疑问句并作肯定和否定回答)
The students are cleaning the classroom . ( 改一般疑问句并作肯定和否定回答)

The students are cleaning the classroom . ( 改一般疑问句并作肯定和否定回答)
Are the students cleaning the classroom?
Yes, they are.
No, they aren't.
(N.B.下次记得把Be动词提前就行了）

Are the students cleaning the classroom?

Are the studengts cleaning the classroom?
Yes, they are.
No, they are not.

Are the students cleaning the classroom?
Yes, they are.
No, they aren't