Mary regretted ___ to John’s birthday party last Sunday.

Mary regretted ___ to John’s birthday party last Sunday.
A、not going
B、not to go
C、not having been going
D、not to be going
【正确答案】：A
【题目解析】：regret后面要跟动名词做宾语，动名词的否定式是在动名词之前直接加not。本句的意思是：“玛丽后悔上个星期天没有去参加约翰的生日晚会。