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"Please" and "Thank you" are words which are very helpful when greeting other pe

http://www.newdu.com 参加讨论 2020/11/22


    题型: 单项选择题 难度: 一般
    "Please" and "Thank you" are words which are very helpful when greeting other people, and
    buying____ or____.
    [???? ] A. good; service????
    B. goods; services????
    C. good; services??????
    D. goods; services
    答案
    D
    

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