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Tony: OK. Tom. Thank you very much for your invitation. Tom:______.
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Xiao Wang: Do you mind if I speak to you in English? Mary: ______.But why?
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Rose: Hi, Lisa. What's wrong with you?______. Lisa: No, I don't. I've got the flu.
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Student: I'm nervous. Teacher:______. Betty, you'll finish it quickly.
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Student: Good morning, Professor Liu. ______I'm late. Professor: You are late every morning. You were late Tuesday, yesterday...Don't you have a watch?