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    The stamps, once , will be very popular with stamp-collectors. A. being printed B. printing C. to print D. printed 【查看更多】

     

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    The stamps, once ____, will be very popular with stamp-collectors. 

    A. being printed     B. printing          C. to print             D. printed 

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    The stamps, once ____, will be very popular with stamp-collectors. 

    A. being printed     B. printing          C. to print             D. printed 

    查看答案和解析>>

    The stamps, once ________, will be very popular with stamp-collectors．

    [　　]
    A．

    being printed

    B．

    printing

    C．

    to print

    D．

    printed

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