用this,that,填空.1.who's___?"_______is mary speaking."2.My seat

用this,that,填空.1.who's___?"_______is mary speaking."2.My seat Who is that speaking 回答用this 还是that 用that或who填空 john is the man _______is reading the book over 1.Who’s that speaking?This is Tom__________ . This is John speaking.Who's that? who is that speaking?为什么回答是This is...speaking 选出最佳答案who 's that?_______is michael.a:he b:that c:this 选择：1.This is Tom speaking.Who's__calling? a.this b.that c.it -----who's that? ------_______is Lucy.下面四个选项选哪个?为什么 A.This B 英语选择填空：_______is she she is my sister.Awhat B.who C.HOw Who is that speaking? Hello!Who is speaking?Hi ,Ann （）Mary.A This B It is C This i