11 Insert mustn't or needn't. 1. You … read in bed.
2. He … buy this book. He can take it from the library.
3. You … translate the whole text. You can translate only part of it.
4. They ... be late for classes.
5. You ... smoke in this room.
6. You ... ring her up. I can do it myself.
7. We have plenty of time. We ... hurry.
8. The children ... go to school by bus. They live quite near.
9. You ... read other people's letters.
