用所给词的适当形式填空。

1. This dog is very _____(love) and I like it very much.

2. Who does _____(good) in English, John or Mike?

3. I hope to spend two hours _____(play) softball with him.

4. Students can have______ (drive) lessons in American schools .

5. At the_____ (begin) of the trip, most of us felt bored.

6. My mother always cooks _____(taste) meals on Sunday.

7. It rained heavily yesterday, so my father          (drive) me to school.

8. The girls finished their work all by_____(them).

9. Yesterday we had a good time _____(chat)with each other.

10. I plan     _    ( go ) to Beijing for summer holiday next year .

反应器的气密形式有（）

A、反应系统抽真空

B、氮气气密

C、氢气气密

D、氮气置换