【题目】Tu Youyou’s years’ of hard work ________ when she finally won the Nobel Prize.
A. went onB. ended upC. got through D. paid off
在线课程【答案】D
【解析】
试题分析：句意：当她最终获得诺贝尔奖时，屠呦呦多年的努力工作得到了回报。A. went on继续；B. ended up结束；C. got through经历，通过，接通电话；D. paid off得到回报。故选D。