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。
21. Mary asked me to repeat______ story _______ second time so that she could write it down.
A. the; the B. the; a C. a; the D. an; a
22. ________ to give up smoking, he threw away his _________ cigarettes.
A. Determining; remained B. Determined; remaining
C. Determined; left D. Determining; leaving
