I"ll never forget the happy days we spent together in Tianjin. Let"s keep in ___

    题型： 单项选择题 难度： 简单
    I"ll never forget the happy days we spent together in Tianjin. Let"s keep in ________.??
    [????? ] A. touch??????
    B. relation????
    C. connection??????
    D. combination
    答案
    A