V. Complete the following sentences with "must", "mustn't" or "needn't".

1. It is a valuable book and you _________________________ lose it.

2. Come on. We _____________________________ hurry. We seem to be late.

3. I think I _____________________________ go shopping. We've run out of food.

4. You ________________________ take an umbrella. It isn't going to rain.

5. Well, it ____________________ be big - that's not important. But it ________________ have a nice