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.