Find and correct the mistakes in the tag questions below. don't1. They live in San Francisco, aren't they?did he2. He didn't buy the chairs, doesn't they?don't they?3. We are late, do we?4. He can't swim, does he?5. She was a student, isn't she?6. Thomas saw a movie, wasn't he?7. He couldn't answer the question, did he?8. Mr. Smith was late, wasn't she?9. They had dinner, were they?10. Your sister bought a new house, didn't it?11. You don't exercise, don't you?12. It's three o'clock, aren't it?13. She is your friend, don't you?14. He is from Canada, isn't it?15. Your father doesn't drink tea, is he?16. They already started their class, don't they?