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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 492

---The zookeeper was really annoyed with me.
--- How could he have been if you _______ stones at the animals?

A.didn’t throw
B.don’t throw
C.hadn’t thrown
D.haven’t thrown
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