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一How are you? 一_______________.
A. It’s a B. B. Thank you. C. I’m OK. D. OK
一How are you?
一__________
A．I am a doctor.
B．Fine,thanks.
C．That's OK.
D．How do you do?
一How are you ? 一________________.
A. Thank you B. Sit down, please. C. I’m fine D. Good morning