She will tell us why she feels so strongly that each of us has a role _____ in making the earth a better place to live.
| A．to have played | B．played | C．playing | D．to play |
I understand ______ preparation that staff must put in under pressure to meet the deadline.
| A．more than the enormous amount of | B．better than most the enormous number of |
| C．better than most the enormous amount of | D．fewer than the number of |
We should always keep in mind that ______ decisions often lead to bitter regrets.
| A．hasty | B．instant | C．prompt | D．rapid |
The scientist has made quite a few discoveries, ______ of great importance to the whole world.
| A．which I think they are | B．which I think are |
| C．I think which are | D．that I think they are |
What was the critic's ______ to the novel?
| A．comment | B．impression | C．comprehension | D．reaction |
She will have to find somewhere else to work, for she can't ______ this loud noise any longer.
| A．come up with | B．catch up with | C．keep up with | D．put up with |