60. D. exhaustion
61. B. cultural
62. B. to remember
63. C. go there by train
64. C. A and B are correct
65. B. If I leave a fish out of water, it will die.
66. A. The tour guide taking us to HLB can speak three languages.
67. B. overlooking
68. A. waiting
69. C. to write
70. D. to be rescued
71. A. destroyed
72. C. standing
73. A. to leave