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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 517

While we were running on the playground,Jack suddenly stopped ___________ and lay on the ground,so we all stopped ___________ what was wrong with him.

A.running; to see B.running; seeing
C.to run; to see D.to run; seeing
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Whilewewererunningontheplaygro