单选题
I regret ______ hard at school, or I would have passed the exam.
A、
to have not worked
B、
having not worked
C、
not to have worked
D、
not having worked
【正确答案】
D
【答案解析】
[解析] 本题考查词语用法搭配。regret doing sth. 表示后悔做过某事(事已做)。否定形式是regret not doing sth. 意为“后悔没有做某事”；regret to do sth. 表示对于要做的事表示遗憾(事还未做)。根据句意，故选D。
提交答案
关闭