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. When I got ________ call from Mrs. Leary saying that I was recommended as ________ babysitter, I accepted without hesitation.
A. the; the B. a; the C. a; a D. the; a
22. -- I' m here just looking for some antiques at this sale.
-- Have you found ________? So many at hand!
A. anything B. something C. everything D. nothing
23. It was a tough ________ to make, but I was determined to leave my job.
A. decision B. chance C. excuse D. move
