用所给词的适当形式填空。

1. I think you have made a good               (decide).

2. He told me that he               (go) to the beach the next day.

3. We're supposed               (finish) homework on time.

4. The boys               (play) soccer when I got there.

5. My parents               (buy) me a new bicycle yesterday.

6. The children enjoyed               (they) on the Great Wall.

7. I like swimming because it can make me               (keep) fit.

8. The yellow pants are               (cheap) of all.