Throw the pencil please(改为否定句)是什么

Throw the pencil please(改为否定句)是什么 please throw the paper on,the froud(改为否定句) Open the pencil box.（改为否定句 Don’t sit down,please.（改肯定句） That is a key （改为否定句）,Splle pencil please.（改为同义句）,The map is throw it into the lake 改为否定句 Throw rubbish on the floor改为否定句 His pen is in the pencil case 改为否定句 Your ruler is in the pencil box.(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 the window. 改为否定句 Open the window ,please.改为否定句