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  • 科目:英语
  • 题型:单选题
  • 难度:较易
  • 人气:2022

In order to learn the _______ of the family business, Bill took a job as messenger boy in one of the offices.

A.ins and outs B.dos and don’ts
C.heads and tails D.t’s and i’s
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Inordertolearntheofthefamilybu