John regretted _____ to the meeting last week.
问题描述：
John regretted _____ to the meeting last week.
not going
not to go
not having been going
not to be going
答
not going
regret doing sth.后悔做过某事
regret not doing sth.后悔没有做过某事
regret to do sth.很抱歉要做某事