—This returned scholar has become one of the top experts in this field.
—Yes, I know him very well. He ______ for ten years at an institute in the USA.
A. has worked B. has been working C. worked D. had worked
Tthe doctor advised her to wear flat shoes _____her back problems.
| A．on account of | B．in terms of | C．for lack of | D．on top of |
Could it be in the room we had a talk last night you left your keys ?
| A．that; where | B．in which; where | C．where ; that | D．where ; where |
____that the government can lead them out of the financial crisis ,people are optimistic about the future of the country.
| A．Convincing | B．Convinced |
| C．Having convinced | D．To convinced |
In the time of HINI, scientists ____ their spare time to conduct research on the ways of curing the disease.
| A．attributed | B．devoted |
| C．abandoned | D．sacrificed |
---- Did you pass the driving test?
---- No. I ______ it, but I had little time practicing.
| A．could have passed | B．must have passed |
| C．can’t have passed | D．shouldn’t have passed |