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 |
An increasing number of students,year by year,across China _______ hard to realize their dream of studying abroad.
| A．try | B．have tried |
| C．will try | D．are trying |
I’m very tired. I _______ on the night shift for several weeks.
| A．worked | B．had worked |
| C．have been working | D．have worked |
Why don’t you put the fruit in the fridge? It will _______ fresh for several days.
| A．be stayed | B．stay |
| C．be staying | D．have stayed |
It was not until then that I came to know that knowledge _______ only from practice.
| A．had come | B．has come |
| C．came | D．comes |
—Where _______?
—I got caught in the traffic, or I would have been here sooner.
| A．did you go | B．had you gone |
| C．have you been | D．were you going |