Bài 21. Change the verb into the correct form:

1. Christopher (drive) ______ a car.

2. We (have)  ______ some posters.

3. (you watch)  ______ movies?

4. They (not work)  ______ for us.

5. I (love)  ______ to sing.

6. She (have)  ______ many foreign friends.

7. Alexis and her husband always (come)  ______ for the summer.

8. (he sing)  ______ well?

9. Jamie (not remember)  ______ me.

10. Laura (be)  ______ a beautiful girl.

11. I (not eat)  ______ pasta.

12. Cats (like)  ______ to sleep.

13. You (be)  ______ a smart girl.

14. She (wash)  ______ the dishes every evening.

15. (you be)  ______ ready?

16. I (be)  ______ ready.