【题目】He’s given me so much help that I really wanted to do something for him _______ .
A.in turnB.in advanceC.in returnD.in case
在线课程【答案】C
【解析】
考查介词短语辨析。句意：他给了我这么多的帮助，我真想为他做些事情作为回报。A. in turn轮流；依次；B. in advance提前；C. in return作为报答；作为回报；D. in case万一；假使。根据句意可知，此处指“为他做些事情作为回报”。故选C。