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    27．If we keep on polluting the environment, the white plastic rubbish will be the last thing to tell other creature that “ once an earth. A． there was B． there is C． it is D． it was 【查看更多】

     

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    If we keep on polluting the environment, the white plastic rubbish will be the last thing to tell other creature that“________ once an earth.”

    [　　]

    A．there was
    B．there is
    C．it is
    D．it was

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