5. Care collect done hope possible usual used wanted waste A B Positive: -able -ful Negative: im- -less re- un-

8. 1.Polluted water is not healthy. 2.It’s something we can use again. 3.The water in the river was very dirty. a.reusable b.Unhealthy c.unclean

9. 4.It’s not true that we don’t listen to students. 5.They hope that the project will be a success. 6.It was not possible to clean up the whole river. 7.The people on the mountain top were not comfortable. d.impossible e. untrue f. successful g.Uncomfort able

10. Noun Verb Adjective Adverb ___ electric__ environment___ pollute___ relaxation___ seriousness____ energetically worry electriction environmental environmentally pollution polluting/ed relax relaxed/ing seriousseriously energy energetic worry worried / ingworryingly

11. Seriously serious polluted relax worry

12. Paper Cans Glass Plastic Clothes and shoes

14. a. Don ’ t buy anything made from endangered animals or plants. b. Cans, glass bottles and newspapers can be taken to recycling centres and reused. C.Don ’ t boil more water than necessary.

15. d.Don’t take new plastic bags from the shop reuse your old ones. e.Turn off lights when you don’t need them. f.Use a bicycle or walk instead of using the car.