7. those your books? 8. No 9. the teacher cool? 10. Yes 11. you good at English? 12. Yes

Решение:

Заполняем пропуски, составляя вопросы и отвечая на них.

1. Are those your books?
2. No, they aren't.
3. Is the teacher cool?
4. Yes, he is.
5. Are you good at English?
6. Yes, I am.