With your brother’s help I’ve made great progress in English and I really want to do some

问题补充：

With your brother’s help, I’ve made great progress in English and I really want to do something for him ．

A. in turn

B. by turns

C. in return

D. in answer

答案：

A. in turn

B. by turns

(答案→)C. in return

D. in answer

解析：考查短语辨析。in turn 反过来，by turns 一次，轮流，in return 作为回报，in answer 作为回答，句意：在你哥哥的帮助下，我在英语方面取得了很大进步，我真的想为他做一些事情作为回报。所以选C。