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    4．I on a sofa because my grandparents have come for the weekend. A．slept B．was sleeping C．have slept D．am sleeping 【查看更多】

     

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    I _____ on a sofa because my grandparents have come for the weekend.

    A．slept 　　　B．was sleeping　        C．have slept 　       D．am sleeping

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    I _____ on a sofa because my grandparents have come for the weekend.

    　    A．slept 　　　   B．was sleeping　 C．have slept 　   D．am sleeping

    查看答案和解析>>


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