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Do you mind if I use vouchers to spend in a restaurant?
----（红色选项为正确答案）.
【A】：Yes, please
【B】：Not at all. Go ahead
【C】：No, thank you
----（红色选项为正确答案）.
【A】：Yes, please
【B】：Not at all. Go ahead
【C】：No, thank you
参考答案