Many cities in the southern part of the United States have difficulty ___ traffic following when it snows.
A.kept
B.keeping
C.to keep
D.in being kept
求详细分析.总是搞不清什么时候用动名词什么时候用不定式
人气：406 ℃ 时间：2020-03-28 18:26:29
解答
选择B项
have (some) difficulty (in) doing sth.
干某事有困难
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