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
网友回答
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。