—Do you know the man is talking with our English teacher?—Oh he must be Lin Taos father

问题补充：

—Do you know the man is talking with our English teacher?

—Oh, he must be Lin Taos father. He was looking for Lin Tao just now.

A. whom

B. which

C. whose

D. who

答案：

A. whom

B. which

C. whose

(答案→)D. who

解析：考查定语从句。句意：------你认识那个跟我们英语老师交谈的那个人吗？-----他一定是林涛的父亲。他刚刚正在寻找林涛。故选D。