答案：Who、这样理Who is the girl?talking with you做定语修饰thegirl,相当于定语从句that is talking with you.这句中文意思是：和你在谈话的那个女孩是谁?那talking后加about呢？是不是用what对。不同搭配有不同的意思。如：What is the girl talking about?那个女孩在谈论什么？Who is the girl talking to?那个女孩在和谁谈话呢？Who is the girl talking with you?=Who is the girl that is talking with you?和你在谈话的那个女孩是谁？