13. When the teacher began to give a lesson, all the students stop 　　　　　(listen) to him.

12. Don't forget ________ (close) the window when you leave the room

11. Where’s your father? He 　　　　　(wash) the car.

10. I wonder how 　　　　　(get) to the station.

9. They are walking home after 　　　　　(pick) corn.

8. After he fell off, he got up and went on 　　　　　(run).

7. There 　　　　　(be ) much fruit and vegetables on the table.

6. My father wants me _________ (be) a doctor when I grow up

5. Jeff ________ (get) up at seven, but I didn't.

4. Mother told us ___________(not read) in bed.