第二部分：英语知识运用
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. In the face of all these difficulties, we’re not discouraged and our spirits well.
A. keep up B. go up C. hold up D. pick up
22. There is a new problem in the popularity of private cars road conditions need to be improved.
A. involving ; that B. involved; that
C. involved; where D. involving; which
