Вставьте модальный глагол can, may, must, needn't.
1. You ... not go out today. It's too cold
2. ... I take your pen? - Do, please
3. We ... not carry the bookcase upstairs It's too heavy
4. Shall I write a letter to him? - No, you ... it's not necessary
5. Molly has already finished her work She ... go home
6. ... you speak or read French?