Выберите правильную форму глагола "to be".

1.I … a student.
2. He … at the Institute now.
3. We … very busy today.
4. My name … Nick.
5. My mother … a teacher.
6. They … workers.
7. You … very clever.
8. How old … you?
9. Nina's father and mother … pensioners.
10. Alex … fond of singing and drawing.