用所给单词的正确形式填空。

1. These _______ (be) pencils.

2. Is it _______ (she) marker?

3. Our classroom ________ (have) two doors.

4. It's a  ________ (wind) day today.

5. The girl is the ________ (one).

6. I ________ (work) hard at school.

7. Jack is ________ (write) on the paper.

8. What ________ (be) they?

9. The ________ (leaf) on the trees are yellow.

10. The wind is ________ (blow) the tree's leaves.