问题补充：
--- What do you think if we put both John and Jack in charge of the work?
--- Just John is OK. , you know.
A. Every dog has his day
B. Everybody’s business is nobody’s business
C. Fools have fortune
D. Great hopes make great men
答案：
A. Every dog has his day
(答案→)B. Everybody’s business is nobody’s business
C. Fools have fortune
D. Great hopes make great men
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