She apologized for _______ to attend the meeting.

She apologized for _______ to attend the meeting.
A、her being not able
B、her to be not able
C、her not to be able
D、her not being able
【正确答案】：D
【题目解析】：此为固定语序，sb.’s not doing sth，not放于doing之前。此外还有固定用法apologize to sb for doing sth，因为某事向某人道歉。