who's that?回答到底用什么it's that's she's 要准确的

who's that?回答到底用什么it's that's she's 要准确的 Who's that回答好像是that 不是说不知道性别用it?到底是哪个 Who's that boy 用什么回答?It is …还是 He is…Is this your mother 用什么回答?yes,she is 还是 yes ,it is 电话用语who's that 回答是 it's .回答行不? -who's that over there?-It's Lucy's sister.这里回答为什么要用It's She's可不可以用呢?为什么? Who's that?It's Mike. 在that is 后面可不可以加人名?例如：That is Kate.这句话对么?提问who is this?回答：这是凯特。英文可不可以说 It's Kate.或者是 this is Kate .回答到底哪个对？ what's this in English?怎么回答?可以用this 还是只能用It is 还有Who is that?是要用he/she还是it回答 请回答这道提： who's that boy? who's that spesking?的回答是什么 who is that boy ?回答时 主语用什么 who is that boy!回答主语用什么!拜谢! who's the man 和who's that man有什么区别,可以随便用吗? Who's this用this is回答还是it is回答 --Who's this?--( ) is Lucy.下面四项选什么?为什么?This/It/That/She Who's that?A It's Tom BThis is Tom 改正错误；Who‘s that It‘s a bird Who's your math teacher?回答It's Miss Lin.