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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1067

Security was such a major concern at the conference that no journalists could approach the meeting zone without ________ the special pass.

A.commanding B.issuing C.producing D.involving
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Securitywassuchamajorconcernat