With your brother’ s help, I’ve made great progress in English and I really want to do something for him _____A.in turnB.by turnsC.in returnD.in answer
参考答案：
C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
