he appologised for ____to help me

问题描述:

he appologised for ____to help me
a)his being not able b) his not being able 选哪个为什么

He apologized for ____to help me.
答案:B
译文:他为他没能帮到我而感到愧疚.
解析:apologize for doing sth.为做了某事而道歉
apologize for not doing sth.为未完成某事道歉