It is reported that the United States uses ______ energy as the whole of Europe.
| A．as twice | B．twice much | C．twice much as | D．twice as much |
—How long in America?
—Two years. I came back last month.
| A．have you studied | B．do you study |
| C．would you study | D．did you study |
What will we do when all the oil in the world has ?
| A．run out of | B．been given out | C．been used up | D．given off |
She was a person and wouldn’t let anyone or anything stop her.
| A．reliable | B．determined | C．stubborn | D．concerned |
So clearly English that he can always make himself understood.
| A．he speaks | B．he spoke | C．did he speak | D．does he speak |
Some research workers completely all those facts as though they never existed.
| A．refuse | B．miss | C．leave | D．ignore |