问题
选择题
We went through a period______communications were very difficult in the rural areas.
A．wtach
B．whose
C．in which
D．with which
答案
答案：C
此题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。which要在定语从句中作主语或宾语，而此处的“介词+which”中要选择介词in,而不选择with.