can/could/able Quiz

1. a) Could b) Cans c) Coulded he understand what you were talking about?
2. My sister a) can b) can to c) will can play tennis now.
3. I a) can b) could c) have can walk when I was less than a year old.
4. (Polite) a) Could b) Can c) Will you tell me what time it is, please?
5. My grandfather a) can b) could c) was able to walk without any help last night.
6. I would like to a) can b) could c) be able to play the piano.
7. How long have you a) can b) coulded c) been able to drive?
8. I'll a) can b) could c) be able to help you later.
9. Can you help me? I a) can b) cannot c) am able to never understand this.
10. Will Man a) can b) couldn't c) be able to live forever one day?