13. _________ (be)your sister a student?

12. My __________　 (dresser)are in the bedroom.

11. These are __________ (they)apples.

10. The ideal room is my ___________(brother).

9. There _________ (be)some soda in the bottle(瓶子).

8. Your mother has three _________(watch).

7. I __________ (not have)a brother.

6. They’re ___________(he)math books.

5. Are __________ (that)your baseballs?

4. There _________ (be)three pencils and a book in the backpack.