单项选择:I can't forget the time ____ the earthquake happened in Yushu.A when B which C that

问题描述:

单项选择:I can't forget the time ____ the earthquake happened in Yushu.A when B which C that
接上:D where

A
关系副词when 引导定语从句
我没法忘记玉树发生地震的时间