—You must have stayed up late last night , ____.    

— You are right. I was watching Korean plays all night long.        

A. mustn't you                        

B. haven't you      

C. didn't you                        

D. hadn't you

警务公开制度要求各级公安机关基层单位要将( )所需手续、程序、时限等印成“警民联系卡”，“便民卡”或“明白卡”，或者设立电话查询服务业务，方便群众办事。

A．各种案件立案、侦查

B．群众常办事项

C．群众报案、求助

D．群众举报、申诉