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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 871

—What class are they having?
—Math.Their math teacher is ________ the classroom.

A.in the front of
B.in front of
C.on
D.behind
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—Whatclassaretheyhaving?—Math.