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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 986

He _______ toward the door when suddenly his junior brother opened it unexpectedly.

A.was walking B.walked
C.had walked D.had been walking
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Hetowardthedoorwhensuddenlyhis