【题目】The teaching building has floors. My classroom is ________ the third floor. （ ）
A. on B. in C. at D. to
【答案】A
【解析】
略
【题目】The teaching building has floors. My classroom is ________ the third floor. （ ）
A. on B. in C. at D. to
【答案】A
【解析】
略
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