问题
选择题
—Does he know how to work out the problem?---Yes, he has ___ a good idea to solve it. ----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
come up with意为：想出/找到（答案或想法）；A为赶上。B为跟上；D为容忍。