Ответ:

1

1.People have been polluting the atmosphere for 100 years. Toxic fumes have been poisoning our planet for a long time.

2.Air pollution has been destroying the sculpture for 50 years.

3.We have been waiting for the bus for 20 minutes.

4.She has been playing computer games for 50 minutes.

5.They have been living in Moscow since January.

2

1.He's strange; I can't make him out.

2.They made out an excuse for being late.

3.We all should try to make up with friends soon after silly tiffs .

3.

1.natural d. habitat

2.air, water and soil a. pollution

3.toxic b. fumes

4.clean out e a pond

5. acid c. rain

IV.

1.Andy has been reading a book for 15 minutes, hasn't he?

2.She is collecting rubbish, isn't she?

3.They study at a secondary school, don't they? 4. Pupils must wear uniforms, mustn't they?

5. My family watched TV yesterday, didn't they?