Unit 16

Ex. 1

1. I can sing.

2. I would like to travel more.

3. He should work harder.

4. Could you tell me the time.

5. I had to work last Saturday and Sunday.

Ex. 2

1. had to

2. have to

3. must/have to

4. had to

5. must/have to

6. have to

7. had to

8. has to

9. have to

10. had to

11. has had to

Ex. 3

1. don’t have to pay

2. didn’t have to wait

3. doesn’t have to work

4. don’t have to go

5. doesn’t have to shave

6. don’t have to do

7. didn’t have to go

Ex. 4

1. mustn’t

2. doesn’t have to

3. don’t have to

4. mustn’t

5. don’t have to

6. mustn’t

7. doesn’t have to

8. mustn’t

9. mustn’t

10. don’t have to

Ex .7

1. should

2. have to

3. has to

4. should

5. have to

6. should

7. has to

8. had to

Unit 17

Ex.1

1. comes	6. has	11. isn’t; won’t go
2. see	7. will go; is	12. miss
3. will introduce	8. won’t lend; learns	13. will be; are
4. becomes	9. will return; reads	14. Will I see; start
5. will ask	10. doesn’t come; will start	15. Will you be; am

Ex. 2

1. If you (I, we, they) get up very early, (c) you (I, we, they) will see the sunrise.

2. If you (I, we, they) eat the whole cake, (i) you (I, we, they) will definitely fall ill.

3. If you (I, we, they)take this medicine, (h) you (I, we, they) won’t catch a cold.

4. If he doesn’t save his money, (a) he won’t be able to buy a car.

5. If he forgets his promises, (d) his father will be furious.

6. If you don’t work hard now, (g) you won’t pass your exam in a week.

7. If he (she) drinks any more beer, (e) he (she) will have problems with the police.

8. If he (she) moves to London, (f) he (she) will work in the City.

9. If it doesn’t rain today, (b) we will go swimming.

Ex. 3

1. is; rains; blows	6. is singing; Do you hear…
2. is; is; is shining; is blowing; are sailing	7. doesn’t usually snow
3. is raining	8. is; Is it snowing; isn’t
4. will rain; will get; don’t put on	9. Are we going; are; snows; is
5. come; sing

Ex. 4

1. would take	6. would be
2. refused	7. didn’t come
3. wouldn’t get	8. borrowed
4. closed down	9. walked
5. pressed	10. would understand

Ex.5

1. What would you do if your car was/were stolen?

2. What would you do if you lost your passport?

3. What would you do if there was/were a fire in the building?

4. What would you do if you were late for your wedding ceremony?

5. What would do if you were invited to a TV program?

Ex. 6

1. If he took examination, he would fail.

2. If we stayed at a hotel, it would cost too much money.

3. If he applied for the job, she wouldn’t get it.

4. If we told them the truth, they wouldn’t believe us.

5. If we invited Bill to the party, we would have to invite his friends too.