问题描述：
We must _______ before the exam.A go over
We must _______ before the exam.
A go over B go it over
C go over it D go the texts over
这道题答案为什么选C,请分析一下,
We must _______ before the exam.
A go over B go it over
C go over it D go the texts over
这道题答案为什么选C,请分析一下,
问题解答：
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