I regret harder in the past two years.A. not having studiedB. having studiedC. having not

发布时间：2020-08-16 10:37:01

I regret      harder in the past two years.
A. not having studied
B. having studied
C. having not studied
D. not being studied

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(答案→)A. not having studied
B. having studied
C. having not studied
D. not being studied
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