题目内容
【题目】玛丽后悔她没有把精力放到学习上。(regret)
【答案】Mary regretted that she hadn't focused her mind on her study.
【解析】句型regret that表示“后悔做某事”;focus on固定短语“专注于......”。根据句意可知宾语从句用过去完成时。因此答案:Mary regretted that she hadn't focused her mind on her study.
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