问题描述：
——you haven't been to Beijing ,have you?
__ .______And now Iwish to go there again.A Yes.I have B Yes I havn't
C No,I have D No ,I havn't
__ .______And now Iwish to go there again.A Yes.I have B Yes I havn't
C No,I have D No ,I havn't
问题解答：
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