问题
选择题
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
答案：D
首先that引导同位语从句，解释前面的名词truth，同位语从句中又是一个由wherever引导的让步状语从句。故选D。