The traffic accident wouldn’t have happened yesterday,but the driver _________ really careless.

下列各句中，表达得体的一句是

wy days, you have to drivevery to avoid traffic accidents.

I don’t like her face; _____ she smokes, which is something I hate [ ]

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