Please (be) quiet in class.中间填什么?

Please (be) quiet in class.中间填什么? don't _ in class,please be quiet.填say 还是talk? please be quiet in class中be 的作用 Please be quiet in class .（改为否定句） Don't ____ in class ,please be quiet. please keep quiet in class he is p____the coming exam.please be quiet填什么 Who will (be)in charge of your class this term 中间该填什么 don't ___ in class,Please be quiet .A.talk B.speak C.say please be ______(quiet) in the library Please be quiet in our library and read (quiet) 1.Be quiet,please.The student( ) a class now.