While working in the countryside, the students a great deal of knowledge on plant life.
| A．looked up | B．picked up | C．put up | D．called up |
The way ______ he did it was different from _______ we were used to.
| A．which; what | B．/; what |
| C．in that; what | D．that; that |
Tom was about to close the window __________his attention was caught by a bird.
| A．when | B．if | C．before | D．since |
---Do you have any good suggestions for our company?
---In my opinion, you should _________ the cost and increase the output.
| A．cut off | B．cut down | C．cut in | D．cut up |
At the meeting, the professor presented a new __________ to foreign languages.
| A．way | B．approach | C．method | D．means |
Since the weather is rainy, the school sports meet is ___ to be put off.
| A．likely | B．possibly | C．possible | D．probable |