1、Both　 his　 parents　 look　 sad . Maybe　 they　 _________what's　 happened　 to　 him .(呼和浩特)

　A.　 knew　 　　 B.　 have known　　 C.　 must know　　 D.will know

5、　 Soon the whole town was talking about it.

4、　 They wanted to know when we were leaving for Shanghai.

3、　 他昨天本来要看那场戏的，可是太忙了。

2、　 上中学时，我住老师家里。

1、　 昨晚我给你打电话时，你正在干什么？

10. While my mother ______ (watch) TV, I ______(make) a kite.

6. This time yesterday Jack ______ (mend) his bike. 7. I ______ (write) a letter at ten last night. 8. It was six. The Greens ______ (have) supper. 9. When you ______ (knock) at the door yesterday,I ______ (do) some washing.

5．When I ________ (go) to school this morning I ______ (see) a car running into a bus．

4．When Harry _______(have) breakfast Lily _______(telephone) him．