A question to my dear colleagues

[Mr.Ahmed EL-hady]

Dear colleague

when I ask about the the subject with 'who' the structure would be:
who +main verb+the rest of the sentence
who opened the door?
HE did...... so 'He' is the subject

and If I ask about the object, the structure would be:

who+ auxiliary verb+main verb+ the rest of the sentence

who did you come with?
I came with Hady/hime...... hady or him is the object

هنا انا بسأل عن مفعول وليس فاعل.. المفروض استخدم whom وليس who
لكن الصيغه دي مشهوره وتقريبا معظم الانجليز بيستخدموها
يعني ممكن اشيل whom واحط who .+ فعل مساعد لما اجي اسأل عن مفعول

So, I think that he doesn't deserve the full mark
because we want to know who is the subject not the object
and that structure isn't common
and
It is up to you