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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1891

His father is __________ engineer and he works __________ research.

A.an, on B.an, with C.the , on D.a, with
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Hisfatherisengineerandheworksr