_______ for snakes while hiking in the woods. —I’ll dress appropriately to protect myself.[ ]

(2013·东北三校4月联考)—Car prices have been going down sharply in the last 20 years.—It’s not surprising because the law of market ________ the price of a product

We’re going to play on Huaguo Mount this week. — Really ______!

double 11th day, my uncle’s online store has successfully sold _____ shoes as last year, that is, it can hardly make ______ progress.

(2009浙江宁波质检)Since David ________ downloaded a virus into his computer, he can not open the file now．