题目内容：
根据下面内容，回答题： A. I'm free now
B. make sure
C. I'm afraid I can't make it
D. give me your number
E. who's calling
F. It's very kind of you
G. You're welcome
H. take care
Secretary: Good morning. Dr. Smith's office.
Wang: Good morning. May I speak to Dr. Smith, please?
Secretary: He's at a meeting just now. May I ask 1, please?
Wang: This is Wang Xiaohong.I'm an exchange scholar from China.I've just arrived in the U. S., and to like to discuss my research plans with Dr. Smith. I had an appointment with him at 2 p.m. this afternoon, but 2 I'd like to reschedule it.
Secretary: Why don't you 3 and I'll have him get back to you as soon as possible.
Wang: Sure. It's 965-4778.
Secretary: OK. I'll 4 he gets the message.
Wang: Thank you.
Secretary : 5 Goodbye.
Wang : Goodbye.
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