Стр. 21

1. b

2. a

3. b

4. b

5. a

6. c

7. a

8. a

9. c

10. a

Стр. 22

1. Correct.

2. PolicemEn.

3. Sally HAS never been to London.

4. Why ARE these girls wearing white blouses now?

5. He has SEEn it and can answer your questions.

6. Correct.

7. HAVE you ever BEEN TO Vladimir.

8. Who GOES to school on Sunday.

9. We have SEEN the film.

10. 1) He DOESN'T sleep in his room.

2) He never SLEEPS in his room.

Не может быть два отрицания в одном предложении. :)

Стр. 14

1. -, the, -.

2. a.

3. an, the.

4. the, a.

5. a, the.

...

1. aren't they?

2. don't they?

3. didn't they?

4. can't he?

5. is it?