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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
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The girl had hardly rung the bell ________ the door was opened suddenly,and her friend rushed out to greet her.

A.before B.until C.as D.since
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Thegirlhadhardlyrungthebellthe