He suggested a card game to relieve the ______ of the journey.

He suggested a card game to relieve the ______ of the journey.
A、monopoly
B、monologue
C、monotony
D、monograph
【正确答案】：C
【题目解析】：句意为：他建议打纸牌给旅途解闷。monotony 单调乏味， 千篇一律；monopoly 垄断，专营服务；monologue独白，独角戏；monograph专论，专题文章。