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    Peter is not working this week.You can ring him at home . A.if necessary B.if so C.if true D.if any 【查看更多】

     

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    Peter is not working this week. You can ring him at home        .

           A．if necessary         B．if so                    C．if true                 D．if any

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    Peter is not working this week．You can ring him at home ________．

    [　　]

    A．if necessary

    B．if so

    C．if true

    D．if any

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