单项选择题


A． Buying an air ticket.
B． Looking for his ID card.
C． Checking in at the airport.
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单项选择题
A． You’d better not. B． You should do that. C． You needn’t．
A． You’d better not.
B． You should do that.
C． You needn’t．
单项选择题
A． I’d like to. B． Yes, I have. C． Yes, I do.
A． I’d like to.
B． Yes, I have.
C． Yes, I do.
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