1. B 2. D 3. B 4. C
5. A 6. A 7. C 8. A
9. B 10. C 11. B 12. A
13. A 14. B 15. D 16. A
17. B 18. D 19. A
20. Conservation is the protection and wise management of the environment
21. People pratise conservation so that the environment can preserve their needs and the needs of all other living things
22. If there is no conservation, all the resources for life – air, animals, energy, plants, soil and water- will be damaged, wasted and destroyed
23. Yes, it does
24. Idea surroundings mean landscapes free of junk and litter
25. devided 26. smaller 27. have 28. submarines
29. My bag was bought by Hang last week
30. If I knew your phone number, I would call you immediately
31. Some cakes are being made by our sisters
32. If I had had enough money, I would have bought that bike
33. Where did the company send the new worker to?
34. How many people are invited to the party by Mary?
