The two Chinese scientists have made a wonderful discovery, which marks a major _______ in the basic research in the field.
| A．reform | B．approach | C．boundary | D．breakthrough |
—How long _____you ______ here?
—About a week. Afterwards I will go to Beijing.
| A．are; staying | B．have; stayed | C．did; stay | D．do; stay |
Is it in Zhou Qu _________ the terrible mudslide happened two months ago, killing more than one thousand people?
| A．where | B．when | C．which | D．that |
I really don’t like the way _____________ she speaks to her parents.
| A．that | B．when | C．which | D．what |
Rather than go through the extreme hot weather and see the World Expo, I prefer ______ at an air-conditioned room and watch TV.
| A．staying | B．to stay | C．stayed | D．had stayed |
—Have you finished your experiment report, Jane?
—Oh, my God. I’ve _____ forgotten all about that.
| A．strongly | B．really | C．entirely | D．freely |