__________ drive so fast, you’ll run the risk of losing your license for six months.

Please ask your friends___________so much noise．

The function of an advertisement is that it can __________customers to buy the kinds of goods.

graduation, more senior students in themainland are applying for admission to Hongkong University.—______. But studying in Hongkong may cost more.

____ the chapter four times, I finally understood the author’s theory.[ ]