Please line up.(改为否定句)
Please line up.(改为否定句)
Stand up,please.(改为否定句)
Tom,please stand up.改为否定句
Wait in line ,please(改为否定句)
stand up.(改为否定句)
Please line up( )shorter( )taller
sit down,please 改为否定句
please keep quiet (改为否定句)
please open the window.改为否定句
Please close the window改为否定句
Please open your books.改为否定句
please open the window. 改为否定句