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 .

循环水过滤器反洗时虹吸管内的压力为（）。

A、高压

B、常压

C、低压

D、负压