根据首字母提示及句意填入适当的单词。

1. I want to give money to the m_____ research.

2. What are you w_____ about these days?

3. The country offered p_____ of help to the people in Yushu in 2010.

4. He is a k_____ people. He knows a lot of things.

5. There are twenty s_____ in this library.

6. It is dangerous to swim in such a d_____ river.

7. The man offered to help but the boy r_____.

8. Who is the o_____ of the big house with a garden?

9. Luckily in the f_____ exam I got good grades.

10. I wear a suit for a job i_____.