His hard work ________ when he won the prize.

His hard work ________ when he won the prize.
A、paid off
B、rang off
C、showed off
D、kept off
【正确答案】:A
【题目解析】:paid off 付清,得到回报;rang off 挂断电话;showed off 炫耀;kept off 让开;句意:他得奖后,他的努力_____。A 符合题意,得到了回报。​