题目内容
21.The moment we heard the news of the earthquake, we began to ________ the work to rescue those who were trapped in the building.
| A.set off | B.set down | C.set aside | D.set about |
D
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It is every citizen’s duty to go out to ______ the snow on the street______ it stops falling so as to make it convenient for traffic to pass. .
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A.sweep up; the instant |
B.clear up; the moment |
|
C.clean up; immediately |
D.whirled up; directly |