I. Complete the sentences with must (not) or (do not) have to (in the correct form). Sometimes it’s possible to use either; sometimes only have to is possible.
1. I have to go to the airport. I’m meeting someone.
2. It’s too late. I must/ have to go now.
3. You ________________________ lock the door when you go out. There have been a lot of break-ins recently.
4. Jack left before the end of the meeting. He ___________________ go home early.
5. I’ve already finished all my work, so I ___________________ study tonight.
6. Students ___________________ wear uniform when they go to school.
7. You really ___________________ hurry up, Vicky. We don’t want to be late.
8. I don’t want anyone to know. You ___________________ tell anyone.
9. When you come to London again, you ___________________ come and see us.
10. A person ___________________ become rich and famous in order to live a successful life.
11. Julia wears glasses. She ___________________ wear glasses since she was very young.
12. I ___________________ work late tomorrow. We are very busy at the office.
13. Johnny! You ___________________ play with sharp knives.
14. Caroline may ___________________ go away next week.
15. You really ___________________ work harder if you want to pass the examination.
16. I ___________________ go to the doctor. I’m feeling much better.
17. We couldn’t repair the car ourselves. We ___________________ take it to a garage.
18. You really ___________________ make less noise. I’m trying to concentrate.
19. Don’t make so much noise. We ___________________ wake the baby.
20. The food was free, so we ___________________ pay.
21. I think you ___________________ pay to park here. I’ll just go and read that notice.
22. Daniel ___________________ go to the bank. He hasn’t any money.
23. You ___________________ wash those glasses. They’re clean.
24. You ___________________ wear your best clothes. You’ll get them dirty.
25. I ___________________ put the heating on. I feel really cold.
I’m not going out. (cold)
It is too cold to go out.…………………
I’m not going to bed. (early)
………It is too early to go to bed………………
Don’t wear a coat. (warm)
………It is too warm to wear a coat
They are not getting married. (young)
………It is too young for they to get married……………
Nobody goes out at night. (dangerous)
…………It is too dangerous to go out at night………………………
Don’t phone Ann now. (late)
……It is too late to phone Ann now……………
They didn’t say anything. (surprised)
………It is too surprised for them to say anything……………………
I can’t work. (tired)
……It is to tired for me to work………………
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