1 Complete the conversations. Use can, can't, could or couldn't.

1. Complete the conversations. Use can, can't, could or couldn't.

1. A: (1) Can I ask you something?
2. B: Sure. What?
3. A: (2) Could you play in the street when you were a child?
4. B: No, it was too busy.
5. A: Are you leaving?
6. B: Yes. I'm sorry - we (3) can't stay.
7. A: (4) Can we sit on the balcony?
8. B: Yes. There are some chairs over there.
9. A: Why are you tired?
10. B: I (5) can't sleep last night. It was too hot.