问题描述：
Could I have a cup of tea? ＿＿＿
A.Yes.you could
B.No,you couldn't
C.Not,too bad
D.Sure,help yourself
（求解析）
A.Yes.you could
B.No,you couldn't
C.Not,too bad
D.Sure,help yourself
（求解析）
问题解答：
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