用am，is，are填空。

1. Where _____________ you from?  I _____________ from China.

2. Where _____________ he from?  He _____________ from England.

3. What _____________ your mother?  She _____________ a teacher.

4. I _____________ Number One.

5. She _____________ in Class One, Grade Two.

6. We _____________ good friends.

7. It _____________ a pear.

8. _____________ you sure?

9. _____________ ten and ten twenty?

10. _____________ it green or red?