Mike apologized for to inform her of the change in the working plan.A. his being not able

网友回答

A. his being not able
B. him not to be able
(答案→)C. his not being able
D. him to be not able
解析：句意：Mike为没能告知她工作计划的改变而道歉。介词for后用动词的-ing形式，其否定形式是在前面加not，其所有格形式是在前面加his…。由句意可知选C。
考点: 考查习惯句型的用法。