4. Choose the right variant:
1. The environment is a very important thing … humans.
a) to b) for c) in d) of
2. Environmental problems will get worse and worse until we … pollution.
a) stop b) stopped c) will stop d) has stopped
3. By the time we … how to recycle, it might be to late.
a) learn b) will learn c) have learned d) learned
4. Our river will be polluted until we … do something for cleaning it.
a) start b) will start c) have started d) started
5. Serious pollution … chemicals and waste made by factories.
a) cause b) is caused by c) affect d) is affected by
6. Ninety-three per cent of Jamaica’s coral reefs … .
a) destroy b) have destroyed c) have been destroyed d) destroyed
7. Polluted air and water … people’s health.
a) threat b) reduce c) litter d) damage
8. I suggest starting a programme to stop industries from using poisonous … .
a) chemicals b) litter c) garbage d) rubbish
9. Some gases that … air can dissolve in water and in the atmosphere.
a) litter b) waste c) pollute d) release
10. After the school party we had to clean the … .
a) rubbish b) waste c) litter d) poison
11. This pollution can be so harmful, that it can … the land, water and air.
a) affect b) effect c) cause d) harm
12. Many teenagers usually … litter near their school.
a) pour b) drop c) release d) affect
13. Environmental problems are caused by … humans.
a) a b) an c) the d) –
14. … water is one of the most important resources for life.
a) a b) an c) the d) –
15. A lot of animals live in …. seas, rivers and lakes.
a) a b) an c) the d) –