1 harmful

2 apply

3 polluted

4 different

5 scientist

6 discovery

7 friendly

8 extinction

9 succeeded

10 attentively

11 differences

12 encourages

13 collection

14 creative

15 disappeared

16 economic

17 imaginative

18 freedom

19 unidentified

20 widely

21 regional

22 imaginative

23 considerably

24 unhappy

25 peaceful

26 courageous

27 industrial

28 careless

29 preservation

30 harmless

31 impressive

32 encouragement

33 uneconomical

34 shorten

35 identification

36 terrorist

37 applicable

38 competitive

39 distinguish

40 independence

41 homeless

42 creator

43 satisfactory

1. harmful

2. apply

3. polluted

4. differently

5. scientist

6. discovery

7. friendly

8. extinction

9. succeeded

10. attentively

11. differences

12. encourage

13. collection

14. creative

15. appears

16. economic

17. imaginative

18. freedom

19. unidentifiable

20. widely

21. regional

22. imaginative

23. been considered

24. unhappy

25. peaceful

26. courageous

27. industrial

28. careless

29. preservation

30. harmful

31. impressive

32. encourage

33. uneconomical

34. shorten

35. identification

36. terrified

37. applied

38. competitors

39. distinguish

40. (câu này sai đề bài)

41. homeless

42. creator

43. satisfactory