Many cities in the southern part of the United States have difficulty______traff

游客2025-03-09 14

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://tihaiku.com/zcyy/3989091.html

相关试题推荐

随机试题

最新回复(0)

AlthoughtheUnitedStatescherishesthetraditionthatitisanationofsm