1, Aquatic life suffers or dies because of thermal pollution.

2, If more trees are planted, the air will be cleaner.

3, Mai spent 2 years studying English in London, so she speaks English very fluently.

4, If I didn’t have to help my dad with something, I could come.

5, Unless someone puts the coal in, the fire won’t go out.

6, Because of soil pollution, many plans died here

7, Many disasters have been caused by global warming.

8, If the air were not dirty, Nick would not sneeze so much.

9, If I had a bike, I would come to see you.

10, I haven’t seen Ann for 2 months.