It was 300 hundred years ago this historic temple was built by a wealthy Mandarin.
A. that
B. when
C. since
D. before
网友回答
(答案→)A. that
B. when
C. since
D. before
解析：句意：这个有历史意义的寺庙被一个富裕的满清官吏建造是300年前的事了。这里强调时间状语。只能用that，不能用其他的词。因为强调句式的固定形式就是：It is …that….故选A。
考点: 考查强调句式的用法。