用括号内所给动词的适当形式填空。

1. Last month, the students had a great time __________in the park. (travel)

2. After reading the evening paper, Mr. Brown ____________ down and soon fell asleep. (lie)

3. Last year he _______ the early bus to work, but now he goes to work in his car.  (catch)

4. The boy spends two hours every day __________ playing the piano. (practice)

5. You may not answer the questions correctly if you ___________ careful enough. (not be)

6. Would you please ____________ quiet in the reading room? (keep)

7. You must do everything you can ____________ him solve the problem. (help)

8. ---How do you like our hometown?

---Wonderful! I _________ here for another three days. (stay)

9. _______ the little baby stop crying, he tried all the ways he could think of. (make)

10. There ____ little water for us people to drink in the near future, is there? (be)