用所给词的适当形式填空。

1. She is    __   (real) good, isn't she?

2. It       __(look) like rain, doesn't it?

3. Do you think the rain     __  (stop) by noon?

4. The coat       __(cost) me 100 dollars last year.

5. Have you ever  __     (be)to this school?

6. Thank you for      __ (invite) me.

7. They are all      __ (friend) to our math teacher.

8. Mary said he      __ (help) me with my geography.

9. They have been      __ (study) foreign languages here.

10. You must be      __ (care) to cross the street.