— Does he know how to work out the problem?
— Yes, he has ________ a good idea to solve it.
A. come up with B. caught up with C. kept up with D. put up with
— Does he know how to work out the problem?
— Yes, he has ________ a good idea to solve it.
A. come up with B. caught up with C. kept up with D. put up with
A