Every morning Mr. Smith takes a ______ to his office.
| A．20 minutes’ walk | B．20 minute’s walk | C．20-minutes walk | D．20-minute walk |
The research group ____________ 15 members has made great achievements in recent years.
| A．is made up of | B．makes up | C．made up of | D．making up of |
Mark was a student at this university from 2006 to 2011，________he studied very hard and was made Chairman of the Students’ Union.
| A．during which time | B．for which time | C．during whose time | D．by that time |
Liu Xiang is believed _____ over $ 20 million in advertisements last year alone.
| A．to earn | B．have earned | C．to have earned | D．having earned |
The _______ boy made the police and his family _______.
| A．gone; puzzled | B．missing; puzzled | C．missing;puzzling | D．lost; puzzling |
Kathy ______ some French while she was away on a business trip in France.
| A．picked up | B．took up | C．made up | D．turned up |