His ability is never in doubt----the question is _______he is prepared to work hard.
| A． whether | B．if | C．that | D．where |
It’s surprising that your brother __________ some knowledge of the computer just by watching others working on it.
| A．picked up | B．packed up |
| C．put up | D．made up |
Students should involve themselves in community activities ___________ they can gain experience for growth.
| A．who | B．when |
| C．which | D．where |
It was in the room _________ he was born _________ the meeting was held.
| A．that; that | B．where; that |
| C．which; where | D．where; which |
More than 10,000 competitors from the world came to Beijing to compete __________ each other __________medals in 2008
| A．with; for | B．for; against |
| C．against; with | D．for; with |
Some scientists believe that ________ is no doubt ________ a cure for AIDS will be found.
| A．it; that | B．it; whether |
| C．there; that | D．there; whether |