问题补充：
When she was in trouble, I did what I could to help her.my help, she wrote me a letter of thanks.
A. In honor of
B. In case of
C. In terms of
D. In return for
答案：
A. In honor of
B. In case of
C. In terms of
(答案→)D. In return for
解析：考查短语辨析。A为了纪念…；B以防…；C就…而言；D作为…的回报；句意：当她遇见麻烦的时候，我做了我能够做的去帮助他。作为对我的帮助的回报，她给我写了一封感谢信。故D正确。
