题目内容
（请给出正确答案）
[主观题]
Mr．Chen：May I ask you a question？Mr．Green：Yes，__________.Mr．Chen：Haven’t we met before？Mr
Mr．Chen：May I ask you a question？
Mr．Green：Yes，__________.
Mr．Chen：Haven’t we met before？
Mr．Green：Yes，we met at the sales conference last year in Beijing．
A.do it
B.please
C.all fight’
D.say it
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