问题
选择题
Leaving behind family members, these farmers are strangers to the cities ______ they work.
A．in that
B．at which
C．where
D．which
答案
答案：C
考查定语从句。先行词是cities,定语从句主语是they，谓语动词是work，是不及物动词，不需要宾语，故使用关系副词，先行词是cities，指地点，故使用where.C 正确。