I'll never forget the day _____ I first met my best friend.用that还是when?

问题描述:

I'll never forget the day _____ I first met my best friend.用that还是when?

用when,引导从句修饰名词days.I'll never forget the day when I ...其他例子:-I met him the day when I first came to the school.-The days when the Chinese suffered from deadly infectious diseases have all gone.-I still remember the happy days when I was in Europe.