第一节 单项填空 (共15小题；每小题1分，满分15分)
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
例：It is generally considered unwise to give a child ___________ he or she wants.
A. however B. whatever C. whichever D. whenever
答案是B。
21. — Since you can’t find a better job, why don’t you stick to the present one?
— Well, .
A. I believe not B. I don’t care C. Never mind D. I might as well
22. We want our children to know that hard work .
A. comes off B. gives off C. pays off D. sees off
