Open the brackets using the verb "to be" in the Present

Open the brackets using the verb "to be" in the Present Indefinite Tense:
1. He (to be) a very good teacher.
2. I(not to be) a first-year student.
3. We(to be) Mr. Smith's children.
4. She(to be) a nice girl, she(to be) never naughty.
5. You(not to be) busy, you(to be) free, I hope.
6. They(to be) fond of flowers?
7. We(to be) friends, we(to be) always together,
8. What(to be) your name?
9. What(to be) your address?
10. My name(to be) Lily, what(to be) yours?
11. He(to be) older than his sister.
12. She(to be) five years younger than her brother.
13. She(to be) eager to become a teacher of English
14. You(to be) in a hurry. I(o be) afraid 15. She(to be) always glad to see her grandmother.
16. They(to be) married, they(not to be) 17. He(not to be) married.
18. You(to be) married?
19. I(to be) a doctor, I(not to be)?
20. I(not to be) late?