单选题 2分

Only when the CIA Director David was forced to resignthat it's hard to keep our e-mail secret.

  • A.we realized
  • B.realized we
  • C.did we realize
  • D.we did realize

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4 单选题 2分
  • A.we realized
  • B.realized we
  • C.did we realize
  • D.we did realize
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