2. My friends rush into the classroom. (改为单数形式)

　　　 ________________________________________________________________

1. The girl behind you is his sister. (改为一般疑问句)__________________________________________

10. If you talk with him, you'll find him very 　　　____ (interest).

9. The 1ittle baby just has four 　　　(tooth) in her mouth.

8. I think he is_　　　 　(much) than fifty years old.

7. Yao Ming is among the best basketball 　　______ (play) in NBA.

6. You have a 1ot of free time, why not do some 　　　____ (read)?

5. There are usually 28 or 29 days in __________ (二月).

B) 用括号内所给词的适当形式填空.

4. This job is much more 　　　___ (困难的) than I thought.

3. Do you enjoy 　　　____ (聊天) with your friends on the Internet?