Don’t be nervous. Professor Liu is really easy to.A come up withB get along withC catch up

问题补充：

Don’t be nervous. Professor Liu is really easy to.

A、come up with

B、get along with

C、catch up with

答案：

解析：A.提出 B.相处 C.赶上；从句意来看：不要紧张。刘教授是很好相处的。故选B.