用所给词的正确形式填空。
1. Today is her _____ (eight) birthday.
2. This is _____ (I) mother.
3. Let's _____ (watch) TV.
4. That _____ (sound) good.
5. Do you _____ (like) basketball?
6. I have a pair of _____ (sock).
7. Henry _____ (have) a penfriend.
8. These are my _____ (photo).
9. September is the _____ (nine) month of the year.
10. There _____ (be) a baseball and some books on the desk.
