1.Must we hand in our compositions tomorrow? — No, you need not, you may hand them in after Sunday.
2. Must John really do this today? — No, he need not, he may do it tomorrow if he likes.
3. You must not let this cup fall: it may break.
4. May I help you with your coat on?
5.May I take this book for a little while? — I am sorry, but I must return it to the library at once.
6. Alec must practise this sound specially, but the other pupils need not: they all pronounce it properly.
7. They may come at any time they like between ten and twelve in the morning, but they need not come if they don't want to.
8. May(mist) I go there right now? — Yes, you may(must)