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As a student, you’d better learn how to write down notes in class before you _____ them.
A.forgetB.are forgetting
C.forgotD.will forget
答案:A
试题分析:考查时态。before引导的从句中用一般现在时表将来即可。句意:作为一个学生,你最好学会如何在忘记知识点前在课堂上做笔记。故选A
考点:考查时态