A library with five thousand books ________ to the nation as a gift.
| A．is offered | B．has offered | C．are offered | D．have offered |
One of the greatestof unhappiness，in my experience，is the difficulty we have in
accepting things as they are．
| A．reasons | B．styles | C．supplies | D．sources |
Everyone present at the meeting agreed to stick to the ________that everyone should be treated fairly.
| A．purpose | B．ambition | C．principle | D．level |
Education reform，the Chinese government attaches great importance，has
attracted a lot of public attention．
| A．in which | B．to which | C．in that | D．to that |
We cannot be about our work．Any small mistake may lead to a serious accident．
| A．very Particular | B．too cautious |
| C．extremely considerate | D．quite serious |
It was_________ back home after the experiment.
| A．not until midnight did he go | B．until midnight that he didn’t go |
| C．not until midnight that he went | D．until midnight when he didn’t go |