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_____.