用所给动词的适当形式填空。

1. The teacher is             (count) the books now.

2. Don't close the door.             (open) the door, please.

3. The boy isn't standing in a boat. He is             (sit) in a boat.

4. The students are not talking, they             (write).

5. Edith             (have) many things to do after class.

6. John often             (help) his friends with their English.

7. Mike             (go) to the park with his parents and sister on Saturday.

8. — Are you listening to me, Joy? —Sorry, I             . (think)

9. Lin Tao is in the tree. He can't             (get) down.

10. My mother             (make) cakes every Friday. It is Friday today.