We need to get to the root of the problem______ we can solve it.
| A．while | B．after | C．before | D．as |
31．The elderly clerk showed us several beautiful dresses in my size and price range，hut___________ were right for me．and we were ready to leave．
| A．nothing | B．anything | C．none | D．They |
30. According to the report，China's graduates will find it tougher than ever to get jobs in the coming year, as China’s economy_________and unemployment rises．
| A．breaks down | B．slows down | C．picks up | D．takes up |
29. Studies show that the things that contribute most to a______of happiness cannot be bought．
| A．cause | B．thought | C．suggestion | D．Sense |
28. —Has your sister finished her novel yet?
—I have no idea．She________it last week.
| A．wrote | B．has written | C．was writing | D．had written |
27．To shut your eyes to facts．as many of you do,_______foolish．
| A．is | B．are | C．are | D．Were |