We went though a period___communications were difficult in the rural areas.A whichB whose

问题描述:

We went though a period___communications were difficult in the rural areas.A whichB whose
We went though a period___communications were difficult in the rural areas.
A whichB whoseC in whichD with which
为什么选C

period做先行词.
而后面的定语communications were difficult in the rural areas in that period,所以必须是C