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    so hard,he wouldn’t have passed the exam. A.Hadn’t he worked B.Hasn’t he worked C.If he didn’t D.If he doesn’t 【查看更多】

     

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    　　 so hard,he wouldn’t have passed the exam.

    A、Hadn’t he worked　　 B、Hasn’t he worked　　

    C、If he didn’t　　 D、If he doesn’t

     

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