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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:1341

【2015·江苏】Much time _____ sitting at a desk, office workers are generally troubled by health problems.

A.being spent B.having spent
C.spent D.spending
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【2015·江苏】Muchtimesittingatades