Wind power is a source of energy we may return in the near future.
| A．on which | B．by which | C．to which | D．from which |
We hope the building project ___will be completed as soon as possible because a lot of citizens are complaining about the noises.
| A．to be carried out | B．carried out | C．being carried out | D．carrying out |
It seemed a pity they ate it after all the trouble they had _____in making it.
| A．met | B．shared | C．taken | D．made |
____twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.
| A．Examining | B．Examined | C．Being examined | D．Having been examined |
—Lucy doesn’t seem to be what she was.
—No. ____so much in the war has made her more thoughtful.
| A．Seen | B．Her seeing | C．Having seen | D．To have seen |
Beijing, ______for hosting the 2008 Olympic Games, ____its first loop (圈) of green belt around the downtown, ____an area of 102.3 square kilometers, in the past three years.
| A．prepared; built; covered | B．preparing; built; and covered |
| C．which prepares; building; covers | D．preparing; built; covering |