This is Ben( ).Who's that,please

1.ello,this is Ann.Who's that,please? who is that和who's this This is John speaking.Who's that? Who is that ,please? who is ( ) calling ,please 括号里是填this还是that Who's------(call),please?This is Jack--------(speak) this sweater is Ben's对Ben's提问 1.Who’s that speaking?This is Tom__________ . This is Peter speaking.Who' this?问对方不应该是Who's that? who is that?A.That's a student B.It's Bob C .This is Bob C:Hello!A:Hello!Is that Mr Wu? C:Yes.Who is it,please?A:This 英语选择题：Who's that? ( ) is Lucy. A This B It C That D She's