--- Was it by cutting down unnecessary expenditure ______ Mr. Simon saved the firm?
--- No, it was by improving work efficiency.
| A．when | B．what | C．how | D．that |
Many of the creatures in the movie “Avatar” are not real, but much of __________ happens is attractive．
| A．which | B．that | C．what | D．them |
—It’s hard to believe that Jack ________ have fought with the policeman．
—Yes．If one ________ ask for trouble, it can’t be helped．
| A．would; will | B．must; may | C．should; must | D．need; dare |
If our car had not ________, we would have been here on time．
| A．broken out | B．broken into | C．broken away | D．broken down |
This new kind of chemicals will help keep the air, soil and water________ from pollution．
| A．free | B．empty | C．loose | D．short |
Barack Obama has taken personal blame ________ the security failures which led ________ the attempt to blow up a plane on Christmas Day．
| A．of; to | B．for; to | C．on; on | D．in; on |