be quiet, please.该否定句

please be quiet 改为否定句 ______ ______ quiet ,please. Please be quiet (改成否定句) Please _____ ______ quiet. please be quiet.变否定句.为什么? Please be quiet in class .（改为否定句） 英语变形Please be quiet变为否定句! Billy,please be quiet.改为否定句怎么做 Please be very quiet.改为否定句 Please（ ）（ ）very quiet. please be quiet.变否定句 please stand in line.变否定句 don t stamp y please keep quiet (改为否定句) 用be quiet 造否定句 Please be quiet. (改为同义句) _______ ________ quiet be quiet的同义句,（ ）（ ）quiet,please.