II. Rewrite...
81. Is that the best you can do?
82. She finds living in the countryside alone hard
83. The last time l met Sam was when we left school
84. You had better go to bed
85. I would rather stay at home to hang out with him
III. Rewrite...
86. It’s not worth getting sad about it
87. Have you ever met someone who is more generous than Nam?
88. You are not allowed to talk in the speech
89. we can't afford to buy this car
90. She was able to read an English book when she was five