问题补充:
It’s not necessary to explain the truth there is spring wind, there is green grass.
A. which wherever
B. that which
C. which when
D. that wherever
答案:
A. which wherever
B. that which
C. which when
(答案→)D. that wherever
解析:考查句子结构。It是形式主语,真正的主语是that引导的主语从句。Wherever there is spring wind,是主语从句中的让步状语从句。