Question

Помогите пожалуйста
1) (Must/May) I sleep in this room tonight?-Yes, you may.
2) (Can/Should) you say it again? I didn't get what you said.
3) You (must/may) help your parents, they are no longer young.

Answer 1

1) (May) I sleep in this room tonight?-Yes, you may.
2) (Can) you say it again? I didn't get what you said.
3) You (must) help your parents, they are no longer young.

Answer 2

1) May.
2) Can.
3) Must.