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) –