Li Ming won the first prize in the speech contest and I’m glad that his efforts at last .p

问题补充：

Li Ming won the first prize in the speech contest and I’m glad that his efforts at last .

paid off B. worked out C. got back D. turned out

答案：

解析：考查动词短语。句意：李明在演讲比赛中获得一等奖。我很高兴她的努力终于得到了好的结果。pay off(指冒风险的政策、做法等)带来好结果，成功，行得通。