一、 用is , am 和are 填空：3`
1. She ______ a teacher . 2. They ________ cows.
3. What _______ these ? 4. I ______ a pupil ,too.
5. It _______ under the tree. 6. My father ________ a doctor .
7. This ________ our classroom . 8. These ________ eggs .
9. My name ______ Amy . 10. His hat ________ on the bed .