题目内容：

Spensor made an apology for --------to inform me of the change in plan . A .his being not able
B . him not to be able 　　C　．his　　not　being　able　　　D　him　　to　be　　not　　able　．应选那个?为什么?

优质解答

选C
Spensor made an apology for sth 由于某事而道歉!
后边是be able to 的变形～being表示动名词～有名词的作用!因此选C
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