Mr. Han my neighbor is always helping those who are in trouble without expecting anythin

问题补充：

Mr. Han, my neighbor, is always helping those who are in trouble without expecting anything .

A. in turn

B. in return

C. in detail

D. in addition

答案：

A. in turn

(答案→)B. in return

C. in detail

D. in addition

解析：这题考查词组辨析：in turn依次，in return做为回报，in detail详细的，in addition此外，句意是：我的邻居韩先生总是帮助那些有困难的人而不期望回报。选B。