81. Lived here for seven years, my friend volunteers to actas tour guide for us all on our city break. A B C D 82. I don't want a brother or sister, unless it will happens, of course. A B C D 83. None of your friends really enjoyed themselves at the party, didn't they? A B C D 84. If you borrow my coat, don't get it dirty, can you? A B C D 85. People who eat lots of red meat are at risk ofdevelop heart diseases. A B C D 86. Your body may not be able to fights infections naturally if your immune system is weakened. A B C D 87. Nam’s wife told him that it would be nice if he spends more time with the children. A B C D 88. Peter explained to us that if Ann called him back, he'll arrange an appointment for her. A B C D 89. Lan's mother reminded her to turn off the lights before leaving a house. A B C D 90. My brother has applied for that scholarship for months, but he has never succeeded yet. A B C D 91. The (A) waiter whom (B) served us yesterday was (C) polite and friendly (D). 92 It was (A) at this shop where (B) I bought a T-shirt (C) three days ago (D). 93. It is (A) at the shop that (B) she bought a (C) wonderful present for him on (D) his birthday. 94. They work (A) in (B) a hospital sponsoring (C) by (D) the government.