Mr.Columbus was always ready to help others. he was liked by everyone.A. In conclusionB. I

问题补充：

Mr.Columbus was always ready to help others.，he was liked by everyone.

A. In conclusion

B. In return

C. In turn

D. In particular

答案：

A. In conclusion

(答案→)B. In return

C. In turn

D. In particular

解析：

in return作为回报，作为报答。句意为：Columbus先生总是乐于助人，作为回报，大家都喜欢他。in conclusion 最后；in turn轮流；in particular尤其。