May the fourth is the day we Chinese people will never foege

选A
从句还原为：we Chinese people will never forget the day
比如：I won't forget you
you是forget的宾语,forget是及物动词,后边直接加宾语不需要介词
在宾语从句中：引导词which,that,who 在从句中要做成分——主语或宾语
when和where在从句中做的是状语
例如：I will never forget the day when i met her.
我永远也忘不了认识她的那天