用所给单词的正确形式填空。

1. The old should be spoken to ______ (polite).

2. My family lives in the ______ (center) park of the city.

3. He is too ______ (care) to pass the final exam.

4. Poetry is a beautiful way to express ______ (think) and feelings.

5. Children's ______ (expect) ideas often surprise the adults.

6. Betty is often seen ______ (help) the old man with his housework.

7. He prefers ______ (take) part in the public activities rather than stay at home alone.

8. They ______ (agree) with each other, so they argued for a long time.

9. Animals are our friends, so ______ (protect) them is our duty.

10. You have ______ (award) a scholarship to study violin at our School of Music.