Never in my life I forget the days we used to play together when we were childre
来源：网络
时间：
推荐文章
Never in my life I forget the days ____we used to play together when we were children.
A.where
B.that
C.which
D.when
试题答案
D
when引起定语从句，前面的先行词是表时间的词。