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    21．--I called you at seven yesterday evening.but there was no answer．--Oh.I am sorry．I dinner at my friend's home．A．am having B．hadC．was having D．have had 【查看更多】

     

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    --I called you at seven yesterday evening，but there was no answer．

    --Oh，I am sorry．I _______ dinner at my friend's home．

    A．am having                                 B．had

    C．was having                                  D．have had

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