I admire Stephen Hawking greatly，whose________about black holes has a great effect on astronomy.
| A．theory | B．practice |
| C．way | D．method |
Beijing announced on Sunday that the date for events ____ the 40th anniversary of the normalization of China-Japan relations would be “adjusted to an appropriate time”.
| A．marked | B．marking | C．having marked | D．to be marked |
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 |