Question

Answer 1

1. D.save

2. C. for

3. A. posters

4. C. about

5. A. disposal

6. A. as well as

7. B. heated

8. C. the amount

9. D.fuel

10. A. instead of

11. A. so

12.  B. for/of

13. A. even though

14. A. Solar energy

15. D. But

16. C. cut off 

17. C. launch

18. C. switch

19. D. non-renewable

20. A. alternative

Answer 2

1 D

2 C

3 A

4 C

5 A

6 A

7 B

8 C

9 D

10 A

Answer 3

11 B

12 B

13 D

14 A

15 B

16 C

17 C

18 C

19 D

20 A