单项选择题

A.likeB.asC.ofD.aboutSuch problem （）air, water, and noi……

Such problem （）air, water, and noise pollutions are becoming more and more serious in some big cities.

A.like
B.as
C.of
D.about

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单项选择题I really hope that you will （）your trip to Canada and get back as soon as possible when people have to knowledge of the law.

A.prefer
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A.highly
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A.rise
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A.to
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A.by all means
B.by any means
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