He was wild with joy when he a solution to the difficult problem.
A. made up with
B. put up with
C. came up with
D. kept up with
网友回答
A. made up with
B. put up with
(答案→)C. came up with
D. kept up with
解析：句意：当他想到这个困难的问题的解决办法的时候，他欣喜若狂。四个选项的含义分别是：A. made up with与……和解B. put up with容忍，C. came up with想出，D. kept up with跟上，所以选C。