He was willing to help me ,and expected nothing .
A. In addition
B. In return
C. By chance
D. By turns
网友回答
A. In addition
(答案→)B. In return
C. By chance
D. By turns
解析：A.In addition此外，还有，B. In return 做为回报，C. By chance偶然的，D. By turns轮替地，句意：他愿意帮助我而且不期望什么回报。根据句意选 B。