第二部分：英语知识运用（共两节, 满分45分）
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. --- I think I’ll give Bob a ring.
--- You _______. You haven’t been in touch with him for ages.
A. will B. may C. have to D. should
22. My most famous relative of all, _______ who really left his mark on America, was Rob Sussel, my great-grandfather..
A. one B. the one C. he D. someone
23. --- I don’t suppose the police know who did it.
--- Well, surprisingly they do. A man has been arrested and ________ now.
A. has been questioned B. is being questioned