---Thank you for the great favor you ______me in face of difficulty.
---It is no ______at all. Helping others also benefit me.A.make; troubleB.do; botherC.give; wonderD.do; use
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B解析do sb a favor意思为 “帮某人的忙”; It is no bother用来表示乐意帮助别人, 意思为 “没关系; 不费事”。句意：谢谢你在我危难时给我的帮助。这不算什么。