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    24．My teacher a paper on how to protect the students' eyesight last week.but I don't know whether she has finished it or not． A．has written B．wrote C．had written D．was writing 【查看更多】

     

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    My teacher        a paper on how to protect the students’ eyesight last week，but I don’t know whether she has finished it or not.  

    A. has written    B. wrote    C. had written     D. was writing  

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