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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1686

Bears_____ fat stores throughout the summer and fall to have energy enough to last them through their winter sleep.

A.pack up B.build up C.bring up D.take up
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Bearsfatstoresthroughoutthesum