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Amy: Hi，Mike. Where is the library?
Mike: Hi. Amy. It's on the second floor.
Amy: Is it next to the teachers' office?
Mme: No. it isn't.
Amy: Is it next to the classroom?
Mike: Yes. it is.
Amy: Thank you.
Mike: You 're welcome.
It's on the second floor.
Mum: Helen, look at that dress．It's pretty．
Helen: Yes, it is．It's very．
Assistant(售货员): Can I ?
Helen: Yes, This dress is nice．Can I try it on?
Assistant: OK．Here ．
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