After discussing the students some good ideas to work on the project.A. put upB. caught

问题补充：

After discussing, the students some good ideas to work on the project.

A. put up

B. caught up with

C. came up with

D. set up

答案：

A. put up

B. caught up with

(答案→)C. came up with

D. set up

解析：C 考查短语辨析。put up“张贴，搭建”； catch up with“追上，赶上”；come up with“想出”；set up“建立”。故选C。