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.
