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： 本题考查词组辨析。在你弟弟的帮助下，我的英语取得了很大的进步，我真的想做点什么回报他。in return 作为回报；反过来；付给in turn 依次； 轮流地；相应地；转而 by turns 轮流地，交替地；挨个地；in answer对……的回答;应……要求
