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The professor asked a question, and David _____ a good answer.
A、put up with
B、stood up for
C、came up with
D、looked down upon
【正确答案】：C
【题目解析】：句意：教授问了一个问题，大卫想出了一个好答案。came up with  提出，想出 时态为一般过去时。