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。
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. If we can _______ our present difficulties, then everything would be all right.
A. come across B. get over C. come over D. get off
