The teacher asked the boys _____ on the wall.[ ]

A. to not draw    

B. don't draw    

C. not draw to  

D. not to draw

下列属于道路运输车辆夏季保养的内容有（）

A.更换老化的刮水器

B.清洁或更换空调滤芯

C.检查散热装置

D.检查电瓶