问题
选择题
After being brought up in the countryside for a decade, the daughter returned to the big city, ________ worked his parents.
A．which
B．/
C．where
D．when
答案
答案：C
题目分析：这个句子中包含一个非限制性定语从句，关系词在定语从句中作地点状语，故用where。
点评：解答这类题，首先要确定从句是什么从句，然后依据相应的语法规则做题。定语从句中关系词的确定，要看它在定语从句中作什么成分。