-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.
| A．is controlling | B．controls |
| C．has controlled | D．controlled |
John was dismissed last week because of his ______ attitude towards his job.
| A．informal | B．casual | C．determined | D．earnest |
Since Tom ______ downloaded a virus into his computer, he can not open the file now.
| A．readily | B．horribly | C．accidentally | D．irregularly |
Alan is a careful driver, but he drives ______ of my friends.
| A．more carefully | B．the most carefully | C．less carefully | D．the least carefully |
We had wanted to finish our task by noon, but it didn’t quite _____ as planned.
| A．find out | B．give out | C．hand out | D．work out |
--Can thoseat the back of the classroom hear me?
| A． | seat | B． | sit | C． | seated | D． | sat |