单项选择：The teaching building has five floors.My classroom is _____the third floor.A.on B.in

分类: 作业答案 • 2021-12-19 23:12:34

问题描述：

单项选择：The teaching building has five floors.My classroom is _____the third floor.A.on B.in
C.at D.to

答

A
on the .floor（在……楼）固定搭配
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