After a second thought, Bill a better idea of how to solve the problem.
A. put up with
B. came up with
C. kept up with
D. mixed up with
网友回答
A. put up with
(答案→)B. came up with
C. kept up with
D. mixed up with
解析：考查词组：A. put up with容忍，B. came up with提出，C. kept up with跟上，D. mixed up with和…混淆，句意：再一想，比尔想出一个更好的解决问题的办法。选B。