The number of smokers fallen 30% this year, compared with last year. A. have; by B.——青夏教育精英家教网—

摘要： The number of smokers fallen 30% this year, compared with last year. A. have; by B. has; by C. has; at D. have; at

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The number of smokers ________ fallen ________ 30% this year, compared with last year.

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The number of smokers ________ fallen ________ 30% this year, compared with last year.

[　　]

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