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— Does my question sound ______enough? — I don’t think so. You can ask more ______ by using “could” ...
题目内容：
— Does my question sound ______enough?
— I don’t think so. You can ask more ______ by using “could” instead of “can”.
A. politely; politely B. politely; polite C. polite; politely D. polite; polite
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