第二部分：知识运用（共两节，45分）
第一节 单项填空（共15小题；每小题1分，共15分）
从每题所给的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. ---Excuse me sir, where is Room 221?
---Just a minute. I’ll ask Bob ____ you there.
A. lead B. leads C. to lead D. leading
22. I think John will make a good monitor, ________ I’d like to vote for him.
A. but B. so C. or D. for
23. The power was lost suddenly while she ________ for information on the Internet.
A. was searching B. is searching C. searched D. searches
24. _________ that I was in trouble, Tom came to my aid without delay.
A. Learn B. Learning C. Learned D. To learn
25. Mr. Brown ________ school an hour ago and he is still on his way home.
A. left B. leaves C. is leaving D. was leaving
26. I have an appointment ________ Dr. Black, but I need to change it.
A. to B. off C. with D. from
27. This kind of book is for children ________ native language is Chinese.
A. which B. who C. whose D. whom
