13. Environmental___is everybody’s responsibility (protect) 14. ___is destroying large areas of tropical rain forest (forest) 15. ___air is one of the many problems we have to solve (pollute) 16. Mr.Brown is talking to some volunteer___ (conservation) 17. They try thier best to reduce levels of___pollution (environment) 18. They are working___, so we are satisfied (effect)
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Đỗ Bảo Vương
16. Mr. Brown is talking to some volunteer conservationists
Đỗ Hồng Long
15. Air pollution is one of the many problems we have to solve
Đỗ Bảo Ánh
14. Deforestation is destroying large areas of tropical rain forest
Phạm Đăng Dung
13. Environmental protection is everybody's responsibility