I will never forget the day _ we work together.

I will never forget the day _ we work together.
A which B When C in which D where
这题选什么?
说是 缺状语 点解?
I will never forget the day _ we spent together.
A which B When C on which D where
这两题有什么不同,
怎么判断 缺的是什么成分?

B
when引导定语从句修饰the day,自身在从句中做状语
A可以填that,which也可以不填,这个句子中从句是个定语从句修饰the day,the day在句子中做spend的宾语,所以是这样填.