Please be quiet.We (have)a class meeting.Don't make any noise.They (have)a meeting

PLEASE _____(BE) QUIET WHEN WE ARE IN SCHOOL BUILDINGS Billy,please be quiet. Please be quiet 是什么意思? And please be quiet. Silence,please!Please be quiet! WILL YOU PLEASE BE QUIET PLEASE怎么样 please be quiet 改为否定句 ______ ______ quiet ,please. Please be quiet (改成否定句) Please _____ ______ quiet. please be quiet 与 please keep quiet 区别是什么 please don't talk___in the library.We must be quiet here.填空急现在就要! 找出错误并改正.please be quiet.we are not allowed shouting in the library. Don't be l___.please be quiet Please be quiet. (改为同义句) _______ ________ quiet be quiet的同义句,（ ）（ ）quiet,please. be quiet的同义句,（ ）（ ）quiet,please. please be quiet.变否定句.为什么? so please be very quiet 的意思 please be ______(quiet) in the library