【题目】---Is this the teachers' office? ( )
---Yes, ______.
A. it is B. this is C. it isn't
【答案】A
【解析】
略
【题目】---Is this the teachers' office? ( )
---Yes, ______.
A. it is B. this is C. it isn't
【答案】A
【解析】
略
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