It’s very________ that, in many schools, the students are going to spend less time in doing homework than they used to .

Bob can play tennis but he can’t playpiano.

There is _______ interesting book on the teacher’s desk.–Oh, ______ book is Wei Fang’s.

While building a tunnel through the mountain, ______ ．

Do you mind _________your room? —No, I’ll do that after finishing _________this article.