题目内容
We went through a period _______ communications were very difficult in the rural area.
A. which B.whose C. that D.when
D
【解析】
试题分析:考查定语从句的用法。Period后面的定语从句中缺少时间状语,要用when,而此题中没有when,所以要选择in which相当于in the period,表示时间,作句中的状语,故选D项。
考点 : 考查定语从句的用法
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