第一节:语法和词汇(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。
21. Really great people always see the best in others; it is the little man who looks for the worst and finds .
A. one B. it C. that D. them