我很后悔考试前没有花足够的时间复习的翻译：I regret exam is not spent sufficient time before review 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

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I regret exam is not spent sufficient time before review

I regretted very much before the test has not spent the enough time review

I very much regret it before the test did not spend enough time refresher

I regret exam is not spent sufficient time before review