—How did she get infected?
—She ____ the viruses without any protection.
| A．exposed to | B．had exposed to | C．was exposed to | D．has exposed to |
----Jack can’t concentrate on his lessons recently.
----Yes, that might _____ his low score in the last test.
| A．stand for | B．apply for | C．account for | D．call for |
Nothing but some ancient Chinese coins _______ in the sunken ship since they began the exploration.
| A．were found | B．was found | C．have been found | D．has been found |
----What’s the common ______ of dealing with youth crime in your area?
----Generally, education comes first.
| A．process | B．practice | C．procedure | D．performance |
----Which of these resorts do you like best?
----______. They are both hot and crowded.
| A．Either | B．Nothing | C．Neither | D．None |
Don’t you know that the famous university is as a matter of fact ____ used to be a church?
| A．where | B．what | C．which | D．one |