Would you be kind enough to help the boy Chinese is really hard to learn?A. whoB. whoseC.

问题补充：

Would you be kind enough to help the boy Chinese is really hard to learn?

A. who

B. whose

C. for whom

D. from whom

答案：

A. who

B. whose

(答案→)C. for whom

D. from whom

解析：考查从句关系词的选择，根据句子结构可知该句为定语从句，先行词为the boy，句意为你能帮助这个孩子吗？对他来说，英语很难学。