Unit 18

ex .1

1. to leave

2. buy

3. take

4. to go

5. to be

6. open

7. to get

8. to help

9. eat

10. have

11. to hear

12. to see

ex .2

1. visiting

2. to do

3. to work; talking

4. cleaning

5. having

6. to go

7. to send

8. reading

9. traveling; flying

10. to come

11. acting; to be

12. working

13. to speak

14. crying / to cry

15. buy

16. see

17. learning

Ex. 3

1. remembering names

2. eating at home, we went to a restaurant

3. doing nothing

4. telling any of their friends

5. playing well

6. leaving school soon

7. playing tennis tomorrow

8. going out

9. having the same job for ten years

Ex. 4

1. solving

2. spending

3. interrupting

4. causing

5. escaping

6. helping

7. coming

1. used to have/ used to ride

2. used to live

3. used to like/ used to love/ used to eat

4. used to be

5. used to take

6. used to be

7. did you use to go

Ex.5

1. This machine is quite easy to use.

2. The window was very difficult to open.

3. Some words are impossible to translate.

4. The chair isn’t safe to stand on.

5. A car is expensive to maintain.

1. It’s an easy mistake to make.

2. It’s a nice place to live in.

Unit 19

Ex .1

1. do

2. make

3. do

4. making

5. do

6. made

7. do

8. make

9. do

10. do

11. made

12. do

13. make

14. do

15. do

16. do

17. made

18. do

19. make

20. make, do

Ex. 2

1. make

2. had done, made

3. do

4. have made

5. have done

6. has done

7. doing

8. has done

9. made

10. do

11. do

12. made

13. to do

14. is doing

15. make

16. make

17. do

18. makes

19. make

20. do

Ex. 3

Make a journey, make progress, do business, do harm, make a speech, do one's best, make a will, make a mistake, make fun of someone, do the garden, do a good job, make a complaint, do the shopping, make arrangements, do a favour, make a bargain, do the washing-up, do repairs, make the beds, make a fuss, do one's duty, do someone a good turn, do an exercise, do a nuisance of oneself, make an effort, do one's hair, make an impression, do one's homework, do an examination, make a profit, make an appointment, do badly, make a cup of coffee, make a difference, make a dress, make a living, make marks on the wall, make a phone call, make a profit, make a suggestion, do well, make a loss, do Maths, make money, do Physics, do some work, do French, do sth for a living, make the dishes, make a decision, do crossword, make changes, make an excuse, make damage to, do experiment, make fortune, make joke, make sure, make trouble, do lessons, do research, make preparations, do a success of sth

Unit 20

Ex. 1

1. at, in, with

2. of

3. on, at, at

4. in

5. by the

6. out of

7. of, at

8. at, of

9. to

10. for, of, of

11. with, at

12. on, to

13. near

14. at

15. with

16. over

17. in,for

18. at

19. for

20. in, on, of

21. off, to

22. for, at, of

23. at, for

24. with

25. in

26. in, in

27. to, by

28. to, by

29. in

30. at