【题目】Though the teacher asked a very difficult question, Tom up with a very good answer immediately.
A. put B. kept
C. came D. caught
在线课程【答案】C
【解析】考查动词词组。句意：这位老师问了一个很难的问题Tom立刻想出了一个好答案。put up with忍受；keep up with跟上；come up with提出，想出；catch up with赶上。根据句意可知选C。