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Exercise 3: Choose the correct answer (mustn't or needn't)
1. Mary
2. You
3. You
4. Students
5. You
6. You
7. It's a secret. You
8. You
9. You really
10. You
go to bed early because tomorrow is her day off.
smoke on the bus. It's forbidden.
do it now; you can finish it later.
use their mobile phones during the test.
buy any beef. There is plenty of it in the fridge.
bring an umbrella. I can lend you one.
tell anybody.
do the washing up as we have a dishwasher.
be late again.
drink at all if you plan to drive.