Sun ,there is a man at the front door who says he has ____ne

Sun ,there is a man at the front door who says he has ____ne mr smith,there is a man at _the__front door who says he has 英语翻译1、Robert,there's a man at the front door,saying he has _ who's the man at the door A He is a doctor; B He is a friend Who is the man---was standing at the door?A.who B.which C.th there is a man standing at the gate.= there is a man who is —There is a knock at the door.—---------------?A.who is that _________a postma at the door.选两个：A.There is B.There has there is ( ）knocking at the door.GO and see who it is A nobo There is a boy ( )at the door. There is a man at the door.(改成复数形式） There is a man ___ the door.空白应填at还是near