【题目】He helped me when I was in trouble, but asked for nothing .
A.in reliefB.in returnC.in additionD.in charge
在线课程【答案】B
【解析】
考查介词短语辨析。句意：我有困难时他帮了我，但不要求任何回报。A. in relief松了口气；B. in return作为报答；C. in addition另外；D. in charge负责。结合句意表示“作为报答”应用短语in return。故选B。