单选题
I regret ______ harder at school.
A、
not to have worked
B、
not having worked
C、
not have worked
D、
having not worked
【正确答案】
B
【答案解析】
[解析] 本题考查非谓语动词的用法。regret to do sth. 意为“因要做…而后悔(事情还没做)”;regret doing sth. 意为“后悔做了…(事情已做过)”。根据句意,应该是说后悔当初没更努力学习,故选B。
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