Thank you very much for the trouble you have taken me with my English.
A. helping
B. to help
C. help
D. helped
网友回答
A. helping
(答案→)B. to help
C. help
D. helped
解析：考查短语：take the the trouble to do 不辞辛苦做某事，题中含有一个定语从句，the trouble是先行词，后面的从句中you have taken后缺少宾语，省略了关系代词which/that，句意：非常感谢你不辞辛苦的帮助我的英语。所以选B。