Ex5: Complete the sentences with MUST, MUSTN'T, HAVE TO, HAS TO, DOESN'T HAVE TO or DON'T HAVE TO.
1. I __________ leave early tomorrow morning or else I'll miss the flight to London.
2. The students __________ hand in their homework by Friday.
3. John doesn't know anything about his birthday party. You __________ tell him anything
about it.
4. Jack _________ get up early tomorrow . It's his day off.
5. If you're in New York you really __________ go and see the Guggenheim Museum.
6. All visitors __________ wear an ID card, otherwise, they won't be able to enter.
7. We _________ be late for the meeting. The director doesn't like people who are not on
time.
8. The car is making a lot of noise. I __________ take it to the garage next week.
9. I'm glad I __________ write my application in English. My spelling is awful.
10. My dad __________ be at the airport by 5. The plane leaves at 6.30.
11. Mike __________ come with me. I can do the job on my own.
12. If you really want to get a good seat, you'll __________ get there early.

I. Complete the sentence with must or have/ has to. Sometimes both are possible.

11. Oh, it's later than I thought. I ______ go.  

12. She's a really nice person. You ______ meet her.  

13. You can't turn right here. You ______ turn left.  

14. You ______ do something.  

15. I haven't phoned Lisa for ages. I ______ phone her tonight.  

16. I ______ get up early tomorrow. There are a lot of things I want to do.

17. My eye sight isn't very good. I ______ wear glasses for reading.  

18. Van Lam can't come out with us this evening. He ______ work.  

19. It's 11 o'clock. I ______ go now.  

27. I'm afraid I can't go with you. I ______ learn for my next exam.  

28. Tomorrow is our public holiday so we ______ get up early.  

29. You ______ think over before answering my questions.  

30. I'm a new comer here so I ______ ask direction to everywhere.  

31. You ______ put the sharp things out of children's reach.  

32. Vietnamese children ______ wear uniform when they go to school.  

VI. Complete the sentences with a form of “ must / mustn’t ” or “ have to/ has to/ don’t have to ”.
1. You _______________pick me up tomorrow. I will take a taxi.
2. Look at that sign! You ___________ walk on the grass.
3. You __________ blame anyone for your mistakes. You need to be responsible for yourself.
4. You _________ be absent from class tomorrow because the teacher will check your attendance.
5. I ____________ prepare dinner because we will eat out tonight.
6. You _________ leave any rubbish here. It is forbidden.
7. You __________ let anyone know that. It is a big secret.
8. You __________ come early tomorrow because the event will start late.
8. You __________ park your car here. There is a “No parking sign”
9. They __________ forget their homework at home.
10.I ____________ do the housework because I have a maid do it for me.
12. They ____________ break the rule that way. It is unacceptable.
13. I ____________ use the computer after 11pm because my mother doesn’t allow me to.
14. You __________ buy that book. I will lend you mine.
15. Students___________ look at their notes while they are taking the exam.
16. My mother has a terrible headache so she __________ stop working today.
17. There is an accident, and the traffic is blocked. We ________ to stay here for a while.
18. While operating a motor vehicle, you ___________ drink and drive.
19. You __________ skip classes too often or you will not pass the final exam.
20. They _________ work hard and earn a lot of money. They want to move to a larger apartment.

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.