UNIT 1. IN AND OUT OF SCHOOL » 9

Fill in the gaps. Use 'must', 'mustn't', 'have to' or 'don't have to'. 1. I can stay in bed tomorrow morning because I don't have to work. 2. Whatever you do, you mustn’t touch that switch. It's very dangerous. 3. You mustn’t forget what I told you. It's very important. 4. We don’t have to leave yet. We've got plenty of time. 5. Ann is feeling ill. She has to leave the party early. 6. I have to go to the bank to get some money. 7. The windows are very dirty. I have to clean them. 8. The windows aren't dirty. You don’t have to clean them. 9. These cakes are very nice. You must have one. 10. We don’t have to take an umbrella. It's not going to rain. 11. This is a secret. You mustn’t tell anybody. 12. You don’t have to buy a newspaper. You can have mine. 13. This train doesn't go to London. You have to change at Bristol. 14. In many countries men must do military service. 16. Sarah is a nurse. Sometimes she has to work at weekends.