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．________ guard whom we thought irresponsible was fired，because he fell asleep when he was on ________ guard.
a．a；a b．the；a
c．the；/ d．a；/
22．the key ________ the problem of traffic jams is to pay the “congestion charge” ________ by the mayor of
a．to solving；introducing
b．to solve；introducing
资源难易程度:★★★★★★★★★★★★★★★
高考资源网版权所有 ©2005-2014
未经许可，盗用或转载本站资料者，本站将追究其法律责任！
