51. C from which I borrowed this novel

IX

52. C - for whom

53. B - was

54. D - extinct

55. B - great

56. B - pollutants

---

30. D the reason why

IV

31. C influence

32. A contaminated

33. B live

V.

34. B stay unchanged

35. C closed down

36. D. hostile

VI.

37. A is

38. A of

39. A depends

40. B therefore

41. A interfere

VII.

42. A closely related to bears

43. D A and C

44. B lonely

45. D figures out 14 new panda reserves

46. D. They have different characteristics when being captivated

VIII

47. A at which I was looking

48. D one of which is about Uncle Ho's life

49. B whom I talked to yesterday

Đáp án:

51 C

IX,

52 C -> for whom

53  B -> was

54  D -> extinct

55  B -> great

56  B -> pollutants

30. D 

IV,

31 C 

32 A

33 B 

V,

34 B 

35 C 

36 D

VI,

37  A 

38 A 

39  A 

40  B 

41  A

VII,

42  A 

43  D 

44  B 

45  D

46 D

VIII,

47  A 

48  D 

49 B