The purpose of new technologies is to make life easier，______it more difficult．
| A．not make | B．not to make | C． not making | D．don't make |
Last month, thousands of workers in that city went on _____ strike, demanding lower taxes and ______ end to cutting staff members.
| A．a; the | B．a; an | C．不填; an | D．不填; the |
--- How can you be late for such an important conference?
--- Sorry! But my flight was ______ by fog.
| A．taken over | B．held up | C．turned down | D．handed out |
So serious ________ that even the best doctors failed to save his life.
| A．the man was injured | B．was the man injured |
| C．the man is injured | D．is the man injured |
Their work ______, all the experts went out for relaxation.
| A．to complete | B．completing | C．completed | D．had been completed |
The growing interest in ____ history is clearly evident in ____ number of people visiting museums and country houses.
| A．不填；不填 | B．不填；the | C．the; the | D．the; 不填 |