this is Mary speaking和it is Mary speaking这两种电话用语的区别

this is Mary speaking和it is Mary speaking这两种电话用语的区别 Holl,This is Mary speaking. 英语打电话用语Is it Mary speaking这句话对不对? Is that Mary speaking?Yes ,it is (英语电话用语)This is……speaking/Speaking 英语划线提问：This is mary speaking This is Mary speaking.改为同义句 Mary:Hello.This is Mary speaking.Is Tom in? Hello.Is that Mary speaking? Hello!Who is speaking?Hi ,Ann （）Mary.A This B It is C This i Mary:Hello.This is Mary speaking.Is Tom in?Tom:Hello.This is Hello!Can I ____ to Mary?This is Tom speaking.