问题
It is every citizen’s duty to go out to______ the snow on the street______ it stops falling so as to make itconvenient for traffic to pass. .
A:sweep up; the instant
B:clear up; the moment
C:clean up; immediately
D:whirled up; directly
B:clear up; the moment
C:clean up; immediately
D:whirled up; directly
正确答案是：
同类题型
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