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    4．-What are they doing? -They a song． A．are listening B．sing C．are staging D．is singing 【查看更多】

     

    题目列表(包括答案和解析)

    --What are they doing?

    --They ________ a song.

    [　　]

    A．listen to
    B．are listening
    C．sing
    D．are singing

    查看答案和解析>>

    --What are they doing?

    --They ________ a song.

    [　　]

    A．listen to
    B．are listening
    C．sing
    D．are singing

    查看答案和解析>>


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