【题目】The computer room is ________ the first floor. ( )
A. on B. in C. under
【答案】A
【解析】
在具体的楼层前用介词on。
上一篇 480是4的(_)倍;被除数是360,除数是3,商是(_)...
下一篇 It's _ in spring and it's _ in summer...
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