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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1434

When I entered the step-classroom (阶梯教室), the lecture __________ and the audience __________ attentively.

A.began, listened B.was begun, was listening
C.had begun, listened D.had begun, were listening
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WhenIenteredthestepclassroom(阶