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    【题目】

    --- Peter, where did you guys go for the summer vacation?

    --- We busy with our work for months, so we went to the beach to relax ourselves.(2010．江苏)

    A. were

    B. have been

    C. had been

    D. will be

    【答案】C

    【解析】由题意可知由于已经忙了几个月的工作，因此“我们”暑假去了海边放松。事情发生在过去的过去，又对后来的动作产生了影响，因此用过去完成时，

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