1. your father a doctor ?
2. I your English teacher?
3. this your jacket?
4. these your books ?
5. their school very far ?
6. you at home now?
7. your parents in the kitchen now?
8. the children hungry ?
9. [???] mathematics difficult?
10. the water cold?
11. [???] scissors in the drawer?
12. music your favorite subject?
13. these your toys ?
14. that a camera?
15. English your favorite subject?
16. boys or girls clever ?
17. they your parents?
18. the weather nice today?
19. the basketball players tall?
20. this your cell phone?