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    13、

    －Dick performed wonderfully at the concert last weekend.   

    －Ye s. He            very carefully before it.   

    A. must have prepared                                             B. couldn’t have prepared  

    C. must prepare                                                      D. could prepare  

     

     

    13、A

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    科目：高中英语 来源： 题型：

    －Dick performed wonderfully at the concert last weekend.   

    －Ye s. He            very carefully before it.   

    A. must have prepared                                             B. couldn’t have prepared  

    C. must prepare                                                      D. could prepare  

     

     

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