4．The high building _____ stand four policemen is the police station．
问题描述：
4．The high building _____ stand four policemen is the police station．
A．which B．that C．in front of it D.in front of which
为什么选D 介词+关系代词等于关系副词 那D项在从句中做什么成分
答
D.in front of which
定语从句中的地点状语