I’m very grateful to Professor Smith, without help I would have never have got this far.
A. who
B. whose
C. whom
D. which
网友回答
A. who
(答案→)B. whose
C. whom
D. which
解析：考查从句，固定词组without one’s help意思“没有某人的注意”，引导句子，所以用whose，句子意思“我非常感激史密斯教授，没有他的帮助我将从来不会走这一步”