33. If we know about what causes endangerment, we may be able to takes measures______ it is too late.
A. until B. unless C. when D. before
32. Our school ______the students to collect used batteries, ______a better environment.
A. appealed; in the hope of B. appealed; in the hope that
C. appealed to ; in the hope of D. appealed to; in the hope that
31. Hardly ______their supper when the power was cut off.
A. he finished B. he had finished
C. did he finish D. had he finished
30.I look on it as a good opportunity to _________ fresh skills and broaden my knowledge.
A. acquire B. require C. accept D. receive
29. —May I use your cellphone?
—Sorry. It’s out of order and it ______.
A. is repaired B. is under repairing
C. has been repaired D. is being repaired
28. —What should I do now?
—I’d prefer ______if you didn’t smoke in front of children.
A. one B. that C. it D. this
27. I think we paid too much for the house, ______ that we needed to get the roof repaired.
A. considered B. considering C. if considered D. to consider
26. —Your flight is boarding now. We’ll have to part.
—Don’t feel blue. ______.
A. A still tongue makes a wise head
B. A single flower does not make a spring
C. All good things come to an end
D. All that glitters is not gold
25. The G20 summit (峰會) in London could be remembered as the turning point when the______ between the developing and developed world ends for ever.
A. tendency B. intention C. appreciation D. distinction
24. It was for this reason ______the new plan______ helping the people who are suffering from hunger.
A. that; aimed to B. why; was aiming at
C. that; was aimed at D. why;aiming to
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