17. D. mournful (adj): bi ai, thê lương, sầu thương

18. C. to close

remember to v: nhớ làm việc gì đó

19. A. feel

To made sth/sb do sth: khiến, làm cho ai/cái gì làm gì

20. B. to

prefer sth to sth: thích cái gì hơn cái gì

21. B. tiny (adj): very small

22. C. carried

carry (v): mang, vác, khuôn theo; carry along: mang theo, cuốn theo

23. A. are being widened

S + be (am/ is/ are) + being + P II

24. C. Biodiversity (n): sự đa dạng sinh học

25. D. destroy(v): phá hủy

26. A. gave you

27. D. excited (adj): kích động

28. D. Were I 

If I were (in your position) = Were I (in your position)

29. D. had studied

If + S + had + P II..., S + would/ could/ might + have + P II

30. B. should

seat belt (n): dây an toàn

31. C. anthem (n): quốc ca

32. C. had lived

Before S + V.ed, S + had + P II

33. D. How about

How about + V.ing

34. A. killed

S + be (am/ is/ are) + P II

35. C. had lived

Before S + V.ed, S + had + P II

36. A. against (preposition): chống lại

37. B. has just been cleaned

S + have/ has + (just) + been + P II

38. B. shouldn't tell

secret (n): bí mật

39. A. are being widened

S + be (am/ is/ are) + being + P II

40. B. conserve (v): bảo tồn

41. C. listening