Mrs. Black went back to_______ place _____ she had found the diamond.
| A．the same; where | B．the same; as |
| C．the same; that | D．as the same; as |
It is true that at times the U.S.A. has experienced periods of_______unemployment as well as labor shortages.
A. available B. acute
C. accessible D. ashamed
We would appreciate it if customers don't______ to leave their suggestions and expectations for our product.
| A．hesitate | B．pretend | C．undertake | D．offer |
Lily was talking to our teacher about examination, when suddenly Tom _______.
| A．cut off | B．cut out | C．cut up | D．cut in |
While I_________that he is an excellent leader,I don’t think he can do a good job in this company because he is too careless.
| A．reflect | B．recommend | C．acknowledge | D．urge |
The two Chinese scientists have made a wonderful discovery, which marks a major _______ in the basic research in the field.
| A．reform | B．approach | C．boundary | D．breakthrough |