We went through a period munications were very difficult in the rural areas.
A. which
B. whose
C. in which
D. with which
网友回答
A. which
B. whose
(答案→)C. in which
D. with which
解析:考查定语从句:先行词是a period,定语从句中缺少in the period,用in which或where引导定语从句,句意:我们经历了一个阶段,期间在农村交流很难。选C。