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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 521

 – Did you notice John was not at work today?
--- No. If _____working, I would have noticed it.

A.I’d be B.I wasn’t C.I’d been D.I weren’t
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–DidyounoticeJohnwasnotatworkt