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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 480

—I phoned you at 9 this morning but got no answer.
—I am sorry. I _____ the bell. I _____ in the garden.

A.didn’t have heard, must have been B.didn’t have heard, must be
C.didn’t hear, must have been D.didn’t hear, must be
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—Iphonedyouat9thismorningbutgo