9. -What's wrong with my computer?

-I think it needs ______ (mend).

8. All these cars ____ (make) in Changchun.

7. In their school they ______ (not learn) Japanese.

6. Bill made quite a few mistakes in his homework. He ______ (tell) to do it again in the classroom after school.

5. -What ______ tractors ______ (use) for?

-Farming.

4. Wow, the soup ______ (taste) so nice.

3. This kind of clothes ______ (sell) well.

2. This story ______ (happen) in the nineteenth century.

1. On which channel ______ the TV play ______ (show)?

5. Keys are used for opening and locking doors. (改为同义句)

Keys are used ______ ______ and______ doors.

IV. 用所给动词的适当形式填空。(10分)