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
(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.
A．is controlling B．controls
C．has controlled D．controlled
(2013·西安一中期末)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
(2013·黑龙江双鸭一中月考)It was several years ________ I realized ________ David had lied to me.
A．when; that B．that; when
C．before; that D．until; why
