问题描述：
lWere you born in Shanghai?---No,——untilI was 3.How long have you been in
Were you born in Shanghai?
---No,——untilI was
How long have you been in Beijing？
Let me see.____since 1998
如何补全对话
Were you born in Shanghai?
---No,——untilI was
How long have you been in Beijing？
Let me see.____since 1998
如何补全对话
问题解答：
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