3 речення з can, 3 з may, 3 з must

1) May I go out?

2) He may be at work.

3) You may call me tonight.

1) You can't do it!

2) Can I sit here?

3) If you have some free time, we can go for a walk.

1) I must go to doctor next week.

2) You mustn't leave without permission!

3) She isn't at school, so she must be ill.