在职攻硕英语考试

Theyaresaid______eachotherlongtimebefore

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根据网考网考试中心的统计分析,以下试题在2017/11/3日在职攻硕英语习题练习中,答错率较高,为:76%
【单选题】They are said______each other long time before they met in Harvard University where they worked together on a research project.
A.to know
B.to have known
C.knowing
D.having known

网考网参考答案:B,答错率:76%
网考网试题解析:

to have known不定式完成式表示过去已经发生的情况。 查看试题解析出处>>

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