I wish to thank Professor Smith without help I would never have got this far.A. who B.

问题补充：

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

A. who

B. whose

C. whom

D. which

答案：

A. who

(答案→)B. whose

C. whom

D. which

解析：句意：我想感谢斯密斯教授，没有他的帮助我从不会走这么远。这里使用定语从句，先行词是Professor Smith，定语从句中缺少定语，用whose引导定语从句，所以选B。