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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1681

The janitor(火炉工), _______ in his regular work, _______ some steam immediately the pressure went up too high.

A.absorbed; set off B.absorbing; gave off
C.being absorbed; put off D.absorbed; let off
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Thejanitor(火炉工),inhisregularwo