15. I haven’t tidied my office ___. a just b already c yet d since16. I can sing, but not as ___ as my sister. a well b good c best d better17. That’s my money! Give ___! a back b it back c back it d it18. Richard isn’t very good ___. a to dance b at dancing c dancing d dance19. I’m sure Canada isn’t as big ___ Russia. a as b than c to d like20. It’s important ___ too much alcohol. a not to drinking b not to drink c not drink d not drinks

15) c

16) a

17) b

18) b

19) a

20) b

1. Alla is talkative and Nina is much more talkative.

2. The river is deep and the lake is much deeper.

3. His report is good and her report is much better.

4. The weather in February is bad and the weather in March is much worse.

5. This tree is short and that tree is much shorter.

6. This stick is long and that stick is much longer.

7. This driver is careless and that driver is much more careless.

8. This castle is old and that castle is much older.

9. This armchair is comfortable and that armchair is much more comfortable.

10. This bed is soft and that bed is much softer.

Ex.4

1) I am sitting( Present Continuous; после в предложении пишется right now( на данный момент)

2) She is drinking ( Present Continuous; ее подруга с ней на данный момент в кафе)

3) have been walking ( Present perfect continuous; говорится, что они гуляют с утра (since используется только в perfect временах)

4) feel ( используя feel говорим о самочусвтии это present simple)

5) are having(present continuous; они все еще там)

6) are staying(present continuous; они там не живут, а на время)

7) get up( present simple, они каждый день встают во сколько-то там времени)

8) stay( present simple, схоже на пункт 7)

9) have already visited ( present perfect, ключевое слово- already)

10) meant ( past simple, они хотели идти в другое место, но не получилось)

11) weren't able( be able в времени по таблице)

12) went ( past simple)

13) look( look forward всегда в present simple)

14) get( "when I get home" present simple)

Ex.5

1. were you doing

had

2. happened?

was walking, when I slipped on...

3.Did you meet

were introducing

4. were you? was trying, there was no answer

was coming, met, had

5. were you doing, we called

got ready, was finishing

6.did you meet

was doing, when he entered

Объяснение:

К 5 заданию при более долгом, протяжном занятий(рекоммендация после while обычно past continuous, а после when past simple) используем past continuous.

Задание длинное, но легкое. В следующие разы лучше самим делать английский :) Такие задания тренируют память и внимательность.