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    Only in this way, directed by the teacher, work out the problem the day before. A. had they B. they could C. could they D. did they 【查看更多】

     

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     Only in this way, directed by the teacher, ______work out the problem the day before.

    A．had they

    B．they could

    C．could they

    D．did they

     

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     Only in this way, directed by the teacher, ______work out the problem the day before.

    A. had they   B. they could    C. could they     D. did they

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     Only in this way, directed by the teacher, ______work out the problem the day before.

    A．had theyB．they couldC．could theyD．did they

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