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。
21．It’s ______ great honor for an athlete to take part in the Olympics, where he or she can win ______ honor for their country.
A. a; / B. /; / C. the; a D. /; a
22．The careless man received a ticket for speeding. He ___ so fast.
A. mustn't have driven B. wouldn't have driven
C. can't have driven D. oughtn’t to have driven
