选择哪一个?为什么?(英语)she apologized for ( ) the meeting.(a) her being not able to attend(b) her not being able to attend

问题描述:

选择哪一个?为什么?(英语)
she apologized for ( ) the meeting.
(a) her being not able to attend
(b) her not being able to attend

选b
否定词+系动词(动名词)