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    Children under 12 years of age in that country be under adult supervision when is a public library. A. must B. may C. can D. need 【查看更多】

     

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    Children under 12 years of age in that country _____ be under adult supervision when is a public library.

    A. must     B. may            C. can            D. need

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    Children under 12 years of age in that country ________ be under adult supervision when is a public library.

    A. must         B. may      C. can       D. need

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    Children under 12 years of age in that country _____ be under adult supervision when he is in a public library.

        A. must             B. may              C. can            D. need

     

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