The high building ________ stand two guards is the police station．

The high building ________ stand two guards is the police station．

A.which

B.that

C.in front of it

D.in front of which

答案及解析： D

解析：

句子的主语the high building后是定语从句，而the high building为此定语从句的先行词，并且在从句中作地点状语。