题目

选择合适的选项补全对话。(每个选项只能选一次)A. It's on the second floor.B. Yes, it is.C. No, it's the first floorJohn: Excuse me．Is it the second floor?Tom:John: Is that the teachers'  office?Tom:John: Where is the library?                       Tom:                                 John: OK．Thanks． 答案：【1】C【2】B【3】A

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