-Hello, who’s that speaking?

-Hello, who’s that speaking? Hello!Who's speaking? Hello,is that Mr.Black speaking?Yes,who's that? hello!who is that speaking? Hi!Who's that speaking?----Hello!_____ Tom! hello who is that speaking什么意思 1、- Who's that speaking? a:hello.who's that?b:（）.（）is mike speaking.I have a fever.I A:Hello.Who's that? Hello!Who's speaking?(改为同义句） This is John speaking.Who's that? 英语选择题-Hello,who's that speakin