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    We on the project for three hours. Let’s have a rest. A. are working B. have been working C. worked D. had worked 【查看更多】

     

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    31. We______ on the project for three hours. Let’s have a rest.

    A. are working        B. have been working        C. worked        D. had worked

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    We______ on the project for three hours. Let’s have a rest.

    A. are working        B. have been working        C. worked        D. had worked

    查看答案和解析>>


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