Complete the list of school rules, using must, mustn't or (don't) have to.

### Exercise 1 1. must 2. must 3. don't have to 4. mustn't 5. mustn't 6. must ### Exercise 2 1. b (You should get a good night's sleep before an exam.) 2. a (You mustn't use your mobile phone in the classroom.) 3. b (Students have to finish the project by the end of the week.) 4. b (Our Physics teacher may be away tomorrow.) 5. a (Students must bring a doctor's note when they are ill.) 6. a (You don't have to join your school's swimming team.) ### Exercise 3 1. You should bring (или must bring). 2. I have to finish (или must finish). 3. She might be (или could be). 4. You can't have seen (или couldn't have seen). 5. You must have broken (или might have broken). 6. You should have come. 7. You needn't have bought (или didn't have to buy).