Could you tell me who you are waiting for.为什么不是whom?

Could you tell me who you are waiting for.为什么不是whom? could you tell me ---------?A who you are waiting for B who Could you tell me(.A.who you are waiting for B.where you liv Could you tell me ____?A.who you are waiting for B.where you Could you tell me __________?who you are waiting for和where y Can you tell me __ she is waiting for?为什么要填whom,为什么不填who呢? Could you tell me_____?A)whom are you waiting B)whom you are Could you tell me_____?A.who you are waiting for?B.where you Could you tell me for you buy this new skirt?用who 还是whom who is waiting for you at the school gate?could you tell me could you tell me ---------?A where are you waiting for B wh who are you waiting for?是不是等于 whom are you waiting