句子中有一个错误，你能找出来并改正吗：
What are he doing?______

选择括号内适当的单词填空。
【小题1】David and I _______ (am / are) in the same class. David _______ (likes / is liking) making model planes, but I _______ (doesn’t / don’t).
【小题2】Mr Black is my _______ (first / the first) PE teacher. He is _______ (the best / better) in our school.
【小题3】Let the old woman _______ (gets on / get off) the bus first.
【小题4】The _______ (Australia / Australian) man is coming. I would like to _______ (be / do) his _______ (friends / friend).
【小题5】There _______ (isn’t / are) any milk in the bottles.

There ____ seven days in a week. ( )

A．are

B．is

C．be

选择合适的选项完成句子。

A．Is

B．doing

C．colouring

D．watching

E．tidy

1.Helen, please__________your room.
2.What’s he_________?
3.Are you__________your picture?
4.__________Daming tidying his house.
5.She is___________TV.

We ________ both tall. (  )

A．are

B．is

C．am