1. Waste paper can be _______ after being recycling. (use)

2. Their latest CD is a ______ of old and new songs. (mix)

3. Attractive _______ can help to sell products. (package)

4. We finished the job, but only with great _________. (difficult)

5. It is a very simple question. You can answer it ______ (easy)

6. Farmers often use ______ to make plants grow well. (fertilize)

7. Reduce means not buying products which are ____________ (overpackage)

8. This river is very _____ for children to swim. (danger)

9. Some _______ resources cannot be replaced. (nature)

10. Compost is a wonderful _______. It helps plants grow. (fertilize)

11. Share your _______ story with our readers! (recycle)

12. They had a ________ time in Halong Bay last summer. (wonder)

13. Let me have your _______ on this report by Friday. (think)

14. We hope the ______ to announce tax proposals today. (govern)

15.

16. These products are _______ friendly. (environment)

17. Linda is one of the _______ from Friends of the Earth. (represent)

18. Our teacher always _____ us to study hard. (courage)

19. Their company has two _______ in every city. (represent)

20. This form must have the ______ of the writer. (sign)