I wish to thank Professor Smith without help I would never have got this far.(·天津)A.

问题补充：

I wish to thank Professor Smith，without help I would never have got this far.(·天津)

A. who

B. whose

C. whom

D. which

答案：

A. who

(答案→)B. whose

C. whom

D. which

解析：考查非限制性定语从句。句意：我想感谢Smith教授，没有他的帮助我不会取得这样的成绩。从句中的help是名词，与Professor Smith是所属关系，故用whose。