According to scientists, our mental abilities begin to____ from the age of 27 after reaching the highest level at 22.
| A．differ | B．shrink | C．fail | D．decline |
“We_____ the train had we left earlier,” the wife complained to the husband.
| A．wouldn’t miss | B．wouldn’t have missed |
| C．would miss | D．would have missed |
The project _________ by the end of 2012, will expand the city’s telephone network to cover 2000000 users.
| A．being accomplished | B．accomplished |
| C．to be accomplished | D．having been accomplished |
When caughtin the exam，he begged for my pardon and triedpunishment.
| A．cheating；escaping | B．cheating；to escape |
| C．to be cheating；escaping | D．to be cheating；to escape |
the teacher's advice yesterday, you __________in hospital now.
| A．Were you to follow |
| B．Had you followed, wouldn’t be |
| C．Had you followed, wouldn’t have been |
| D．If you followed, wouldn’t have been |
to be the best one in the group, she had an opportunity to enter for the final competition.
| A．Judging | B．To Judge | C．Having judged | D．Judged |