Some new oilfields ________ since 1976.
| A．were opened up | B．will be opened up |
| C．have opened up | D．have been opened up |
It _____ to chat online all day long. You’d better do something else.
| A．makes no sense | B．makes no difference |
| C．makes sense | D．makes difference |
For a moment nothing happened. Then all shouting together.
| A．voices had come | B．came voices |
| C．voices would come | D．did voices come |
The police ________ Tom of stealing and the accused was afraid to meet the accuser.
| A．accused | B．charged | C．robbed | D．informed |
He found them _____ at a table ____ chess.
| A．sat; to play | B．sitting; to play | C．seated; playing | D．seat; playing |
More and more high－rise buildings have been built in big cities space.
| A．in search of | B．in place of | C．for lack of | D．for fear of |