V

1 B

2 B

3 D

4 A

5 C

6 If we turn off the tap when brushing the teeth, we will save a lot of water.

7 If people travel more by public transport, the harmful gases in big cities will be reduced.

8 If we start at 6.00, we will arrive there before noon.

9 If the boy eats so many green apples, he will be ill.

10 If we use reusable bags for shopping, we will reduce waste.

IV

1 If we plant more trees, the air will be fresher.

2 If we use fewer cars, we will reduce pollution.

3 If we cycle to school every day, we will keep fitter.

4 If we use recycled products, we will save money.

5 If people throw rubbish into the right bin, they will keep the environment clean

16 B

17 D

18 D

19 C

20 C

11 D

12 B

13 B

14 B

15 D

6 D

7 C

8 B

9 C

10 B

III

1 B

2 A

3 B

4 B

5 A

II

1 D

2 B

3 D

4 D

5 A

1 B

2 C

3 B

4 A

5 D

She asked me to promise not to say anything about what I had seen.

I would rather you did not interrupt me while I am talking.

The older she gets, the more beautiful she becomes.

This furniture has to be moved from this room.

What I was really impressed by was her ability to run the company.

I would have met you at the airport if I had known you were arriving.