—Guess what? Tom has failed in the exam ____ second time.
—How come? He is ___ second to none in English in our class.
| A．a; a | B．the; a | C．a; / | D．the; the |
Internet users are warned to be ________ about giving away personal information to strangers.
| A．cautious | B．anxious | C．particular | D．sensitive |
The managing director took the ________ for the accident, although it wasn't really his fault.
| A．charge | B．account | C．blame | D．cause |
—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 |
Is he the only one of the students who ________ here just now?
| A．is | B．are | C．was | D．were |
We ________ jump to conclusions before we have all the facts.
| A．couldn't | B．mightn't | C．shouldn't | D．mustn't |