问题
选择题
—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
答案：C
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。