Bequiet____________,please.(在博物馆里)

Bequiet!____(listen)tothemusic.

Bequiet!They________ameetinginthenextroom. A: arehaving B: have C: werehaving D: willhad

Bequiet!They（）ameetinginthenextroom. A: are having B: have C: were having D: will  had

Bequiet,please．Ican’t_______theguide. A: watch B: see C: hear D: listen

We____________talkloudlywhenweseethe"BeQuiet"sign. A: must B: mustn't C: need D: needn't