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。
例：We _______ last night, but we went to the concert instead.
A. must have studied B. might study
C. should have studied D. would study
答案是C。
21. –Have you got any particular plans for the coming holiday?
--Yes. ______, I’m going to visit some homes for the old in the city.
A. If ever B. If busy C. If anything D. If possible
22. You have no idea how she finished the relay race ______ her foot wounded so much.
A. for B. when C. with D. while
