Only in 1996 the determination and patience of the scientists with a breakthrough at last .
| A．were ; paid off | B．did; pay back | C．did ; pay off | D．did ; pay for |
39. As you make your ____, so you must lie on it. (prov.)
| A．clothes | B．bed | C．house | D．Bike |
40. --- What did you have for supper, Jack?
--- I had some _____.
cow B. ox C. bull D. Beef
41. If you don’t advance, you would be behind _____.
| A．time | B．the time | C．the times | D．Times |
42. Which of the following groups is meat? _____
| A．mutton, beef, chicken, fish | B．mutton, beef, chicken, pork |
| C．egg, beef, chicken, fish | D．mutton, beef, fish, pork |
43. A ____ in the hand is worth two in the bush. (prov.)
| A．bird | B．pigeon | C．eagle | D．Sparrow |