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. —Could you do me a favor and take these books to my office?
—Yes, ______．
A. for pleasure. B. I could. C. my pleasure. D. with pleasure．
22. When Tom left the shop, he_______ a glimpse of a man wearing a red tie.
A. took B. caught C. made D. gave
