Who know it 还是Who knows it?回答用I还是me?

Who know it 还是Who knows it?回答用I还是me? it is i who.还是it is me who. 是Who knows?还是Who know? --who does it belong to 的回答--Me.还是Mine. it's me who is.还是 it's i who am.,哪个对或者更常用,求高手回答~求务必详解 who is that girl?回答是she is还是it is..可以回答she is me who is knocking at the door?it'me 还是I am 还是 it's I要详细一点 说明它们 (Who,Whom) is on the phone?It is (me,I).这里应该是it is me 还是I,我看 英语who was it invented by 用who 还是whom? who is knocking at the door?it is ()me还是i呢?求理由 Who can tell me what place it is 还是Who can tell me what plac Who's this用this is回答还是it is回答