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

问题补充：

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

A. his being not able

B. his not being able

C. him not to be able

D. him to be not able

答案：

A. his being not able

(答案→)B. his not being able

C. him not to be able

D. him to be not able

解析：考查短语：apologized for(doing) sth 因某事道歉，动名词的否定式在前面加not,故选B。