Question

Вставьте модальные глаголы can,may, или must
1) Students ... not be late for their lessons.
2) ... I open the window?
3) ... I send this telegram today? - No, you needn't. You ... send it tomorrow.
4) ... you play football? - No, I ... not help you, I am very busy.

Answer 1

1) Students .must.. not be late for their lessons.
2) .May.. I open the window?
3) ..Must. I send this telegram today? - No, you needn't. You .can.. send it tomorrow.
4) ..Can. you play football? - No, I .can.. not help you, I am very busy.