他学习刻苦，为的是通过考试。
因为有些内容是在八年级教授的，Frazer必须花时间为学生复习好让他们通过考试。
Because some of that material was covered as long ago as eighth grade, Frazer must take time to review so his students can pass the high school test.
因为有些内容是在八年级教授的，Frazer必须花时间为学生复习好让他们通过考试。
Because some of that material was covered as long ago as eighth grade, Frazer must take time to review so his students can pass the high school test.
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