确认那个对：what's wrong with me who knock the door or who knocks

确认那个对：what's wrong with me who knock the door or who knocks Who is_______(knock)on the door? When you hear a knock on the door,what will you say?用who is A knock on the door!Who --it be? -Who's knocking at the door?- ____ me Tom. “stay with me”what's mean?who tell me what's wrong with me? 怎么改这些宾语从句what's wrong with you?(Did you tellme )Who is the b please tell me if he knocks()the door.A.at B.in C.with D.by what’ s wrong with me on the earth? Who's that at the door --Who's knocking at the door?