Smoke on the bus,please.该否定句

draw on the ,please.改为否定句 Get on the bus when it stops.(变为否定句) Write the words on the blackboard ,please改为否定句 please throw the paper on,the froud(改为否定句) Sit on the desk,please.如何改为否定句 turn on the TV,please.（改为否定句） please fly a kite on the grass.改成否定句 there are many picture on the wall该否定句 There is a big bus on the road.否定句怎么改 jalk waited on this corner for the bus改为疑问句和否定句 I go to the bus stop on foot的否定句是什么 click on"send",please.变为否定句