题目

—Does he know how to work out the problem ?     —Yes , he has         a good idea to solve it .    A. caught up with    B．kept up with    C．come up with D．put up with 答案：C 解析: catch up with：跟上，赶上；keep up with：跟上；come up with 找到，想起；put up with：容忍.忍受，他已找到了解决问题的方法。故选项C。

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