He has a friend father is a doctor.A. whoB. whomC. whoseD. which

问题补充：

He has a friend father is a doctor.

A. who

B. whom

C. whose

D. which

答案：

A. who

B. whom

(答案→)C. whose

D. which

解析：此题考查定语从句，先行词a friend和从句主语father是所有关系，引导词在从句中作定语，故用whose。选C。