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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1856

The little boy is dirty from head to foot because he ___ in the mud all morning.        

A.has played B.is playing C.has been playing D.was playing
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Thelittleboyisdirtyfromheadtof