43. A. It is believed that some dinosaurs were intelligent, capable of performing complex activities, and perhaps even capable of social behavior.
44. A. is -> I wish everybody were fully aware of the importance of preserving their traditions and culture.
45. B. to visit -> They asked me what he would do if he had a chance to visit Hue.

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to the original one in each of the following questions.

46. D. If there is no Covid-19 pandemic, we would not have to cancel the trip to the mountain.
47. B. English vocabulary should be learnt through reading.
48. D. Tom asked Mark what time he came home every day.
49. C. John hasn't returned to his home town for 12 years.
50. C. I wish my village had a swimming pool.

THE END