如遇客人向服务员打招呼，此时客人一定有事急需帮助，为缓解客人的焦急心情应采用（）的服务用语。
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We can't have lunch at the restaurant, because __________.
A．not all of us have money
B．all of us don't have money
C．everyone of us don't have money
D．none of us has money
下列必须申请施工许可证的工程是( )。
A．故宫的修缮工程B．某军区军用设施工程C．某地为抗击洪灾抢建的堤坝D．某建筑面积为350m2的单幢别墅
