Mark the letter A, B, C or D on your answer sheet to choose the sentence which is closest in meaning to the one in bold.
If you don’t wake up early, you can’t catch the first bus to the city center.

A.   You haven’t to wake up early to catch the first bus to the city center.

B.   You don’t have to wake up early to catch the first bus to the city center.

C.   You have to not wake up early to catching the first bus to the city center.

D.   You have to wake up early to catch the first bus to the city center.

Mark the letter A, B, C or D on your answer sheet to indicate the best answerof each following questions.

If you don’t have his number, you can’t phone him

A. You can phone him unless you have his number

B. You can’t phone him unless you have his number

C. You can phone him unless you don’t have his number

D. You can’t phone him unless you don’t have his number

EXERCISE 1: Rewrite the following sentences using “Unless”

1. I won’t go to school if I don’t feel better.

2. Tony will walk to you is you question him.

3. If you don’t put on your overcoat, you’ll be cold.

4. You will fail the exam if you don’t work hard.

5. You’ll get a cold if you don’t keep your feet dry.

6. If I don’t leave now, I’ll miss my flight.

7. If you aren’t going to the party, I won’t go.

8. I can’t send you a postcard if  you don’t give me your address.

9. If I won a big prize in a lottery, I’d build a school for the poor.

10. I’ll call the police if you don’t leave me alone.

EXERCISE 2: Rewrite the following sentences using conditional sentences type 2.

1. They are poor, so they can’t help us.

2. He doesn’t do this homework. He is always punished.

3. He doesn’t have enough time. He can’t help me.

4. She doesn’t take any exercise, so she is overweight.

5. He doesn’t have a bicycle, so he always goes to class late.

6. I am bad at English, so I can’t do homework.

7. He doesn’t practise speaking French, so he doesn’t speak it fluently.

8. The meeting can be cancelled because it snows heavily.

9. We don’t go because it will rain.

10. John is fat because he eats so many chips.

EXERCISE 3: Rewrite the following sentences using conditional sentences type 3

1. He didn’t hurry, so he missed the train.

2. We didn’t go because it rained.

3. We got lost because we didn’t have a map.

4. He lost his job because he was late everyday.

5. The dress was so expensive. She could not buy it.

6. Sue felt sick because she ate four cream cakes.

7. My brother left the car keys, so I had to pick him up at the station,

8. We didn’t go on holiday because we didn’t have enough money.

9. He didn’t have the ticket to the game last week. He wasn’t be able to get in.

10. Robert got a bad cough because he started smoking cigarettes.

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.

Finish the second sentence in each pair, using If or Unless.

1.   If you don’t do better work than this, you won’t pass the exam.

2.   You can’t visit the United States unless you get a visa.

3.   Unless someone has a key, we can’t get into the house.

4.   Unless he phones immediately, he won’t get any information.

5.   If Joe doesn’t change his ways, he will end up in prison.

6.   If he doesn’t work harder, he’ll lose his job.

7.   If it rains, we won’t go swimming.

8.   You will become ill unless you stop working so hard.

9.   If you work hard, you’ll pass your exam.

10.  Unless you hurry, you won’t catch the bus.

11.  If he doesn’t start work right now, he’ll never finish it.

12.  We won’t get there on time without taking a taxi.

13.  Joan will stay on at school unless she finds a good job before September.

14.  If you don’t rest, you really will be ill.

15.  The child will die if nobody sends for a doctor.

16.  You won’t find any accommodation if you don’t book it in advance.

17.  You will catch a cold if you don’t keep your feet dry.

18.  I’ll call the police if you don’t leave me alone.

20. If he fails the final examination, he won’t be able to graduate.

21. If you are not careful, you will cut yourself with that knife.

22. If you don’t like this one, I’ll bring you another.

23. I’ll not able to do any work if I don’t have a quiet room.

24. If she doesn’t hurry, she’ll be late.

If he doesn’t take more care, he’ll have an accident.

-> Unless . ……………………………………………………………………………………………………….. .

The crops will be ruined if it doesn’t rain soon.

-> Unless ......... . ………………………………………………………………………………………………..

27.           Unless the weather is fine, we’ll stay at home.

->  If . . . . ………………………………………………………………………………………………………..

28.           I can’t go with you unless I get my work finished.

-> If ............... . ………………………………………………………………………………………………………..

29.           If you don’t leave on the 15^th , you’ll get home late for your mother’s party.

-> Unless............ . ………………………………………………………………………………………………..

30.           Tom never does anything unless his father tells him what to do.

-> If ............ . ………………………………………………………………………………………………………..

31.           Don’t take this job if you don’t really want it.

-> Unless ............ . ………………………………………………………………………………………………..

32.           If she does nothing to prepare for the test, she will get bad marks.

-> Unless ......... . ……………………………………………………………………………………………………..

33.           You can’t visit the United States unless you get a visa.

-> If ............... . ………………………………………………………………………………………………………..

34.           Unless you remember our address, you can find it in the phone book.

-> If ...................... . …………………………………………………………………………………………..

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

I don’t care ______ money. Money can’t buy happiness. 

A. about 

B. with 

C. in 

D. at