2. 外语
  3. Many cities in the southern part of the United States have difficulty______traffic flowing when it snows.

Many cities in the southern part of the United States have difficulty______traffic flowing when it snows.

admin2014-08-25  49
问题 Many cities in the southern part of the United States have difficulty______traffic flowing when it snows.
选项 A、kept
B、keeping
C、to keep
D、in being kept
答案B
解析 在have difficulty(in doing sth．)句型中，in可以省略，所以A、C都不对，这里是说下雪时人们很难保持交通通畅，是主动而不是被动，所以选B。
转载请注明原文地址:https://kaotiyun.com/show/PcxO777K
0

成人本科学位英语

相关试题推荐
随机试题
最新回复(0)