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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 344

There are six floors ______our school building. Our class is ______ the third floor.

A.in, on B.in, in C.on, in D.on, on
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Therearesixfloorsourschoolbuil