8. You shouldn’t smoke in the bus. (同上)

　 You are not _______ _______ smoke in the bus.

7. I find it is useful to learn Englisj well.

　 I find _______ _______ to learn English well.

6. The weather is not too hot and it is not too cold, either. (改为同义句)

　 The weather is _______ too hot _______ too cold.

5. He used to cause a lot of trouble. (改为一般疑问句)

_______ he _______ to cause a lot of trouble?

4. The backpack must be Cindy’s. (改为反意疑问句)

The backpack must be Cindy’s, _______ _______?

3. I like going to sleep with my bedroom light on. (同上)

_______ _______ you like going to sleep?

2. He might try to catch the ball.(对划线部分提问)

_______ _______ he try to do?

1. There is a seat in the corner. The seat is free.(合并为一句)

　 There is a seat in the corner _______ is free.