The history of nursing ___ the history of man.
| A．as old as | B．is old, also old |
| C．that is as old as | D．is as old as |
Through years of hard work, Mrs. Smith, who ____ as a secretary for five years, is general manager of the company now.
| A．serves | B．served | C．has served | D．had served |
The newly-discovered evidence led to the criminal ____ to five years in prison.
| A．to be sentenced | B．being sentenced | C．sentenced | D．be sentenced |
The discovery of the new drug is of great ____ to people who suffer from heart problems.
| A．appreciation | B．significance | C．satisfaction | D．guidance |
In the job interviews job applicants often find themselves asked unexpected questions, some very difficult ____.
| A．to be answered | B．to answer | C．being answered | D．answering |
Have you bought the same book ________ I referred to yesterday?
| A．that | B．as | C．which | D．what |