III

Task 1:

1, True

2, False

3, False

4, True

Task 2:

1, Yes, they did.

2, It is being polluted.

3, They are water pollution, air pollution and land pollution.

4, It is the responsibility of the whole mankind to put an end to the pollution.

WRITING

Task 1:

1, Have you ever thought of taking bus to school?

2, This is a fast and comfortable way to travel everywhere.

3, Beside, it is an effective way to save energy.

4, So, go to school bus and you will see the difference.

Task 2:

1, We should use solar energy to create electricity.

2, If Hoa doesn’t hurry, she will be late.

3, I suggest buying a new shower to save water.

4, My sister speak English very well.