Victor apologized for to inform me of the change in the plan.A. his being not able B. him

问题补充：

Victor apologized for to inform me of the change in the plan.

A. his being not able

B. him not to able

C. his not being able

D. him to be not able

答案：

A. his being not able

B. him not to able

(答案→)C. his not being able

D. him to be not able

解析：考查动名词的复合结构：句意：维克多因为他不能通知我计划的改变而向我道歉。Apologize for doing sth，这里用动名词做宾语，his是动名词的逻辑主语，否定词not放在动名词前面，选C。