Complete the sentences with the modal verbs must and need in the correct form.
1. I have bought everything, so you ... go shopping.
2. You ... take an umbrella. It is not going to rain.
3. Look after the books, please. You ... lose them.
4. You ... wear your best clothes. You can wear what you like.
5. You ... take a jacket. It is rather cold.
6. It cannot be true. It ... be a lie.