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    30．----- Oh, look! The ground is wet. Mind your steps. ----- It . A．must be raining B．must have rained C．rained D．may rain 【查看更多】

     

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    ----- Oh, look! The ground is wet. Mind your steps.

     

    ----- It _______

     

           A．must be raining   B．must have rained   C．rained           D．may rain

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    －Oh, look!The ground is wet．Mind your steps．

    －It ________．

    [　　]

    A．must be raining

    B．must have rained

    C．rained

    D．may rain

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