单词拼写，根据英文首字母提示完成单词。

1. My pen pal can speak two l___________, English and French.

2. Guangzhou is in the s________ of China.

3. I'm not good at English. I have to study hard to i________ it.

4. It often s_________ in winter in Harbin.

5. The floor is too d________. Let's clean it first.

6. The students have a good time on C_________ Day, June 1st

7. This lion is lazy. It usually r________ twenty hours every day.

8. Our teacher is f_________ to us, so we like her very much.

9. We are s___________ that the little boy can the piano so well.

10. The hotel is not in front of the library. It's b_________ the library.

染色体的主要化学成份是和 。