After living in Paris for fifty years he returned to the small t

After living in Paris for fifty years he returned to the small town _____ he grew up as a child．
A、which
B、where
C、that
D、when
【正确答案】：B
【题目解析】：从句he grew up as a child不缺少句子成分，所以空格处应该用关系副词引导。the small town表示的是地点，所以需要用表示地点的关系副词where。