—I wonder what makes you a successful manager.
—I as a waiter for five years，which contributes a lot to my today’s work.
A. serve
B. have served
C. had served
D. served
网友回答
A. serve
B. have served
C. had served
(答案→)D. served
解析：
由第一句“我想知道是什么让你成为一位成功的经理”得知对方现在已经是一名经理，那么下一句的作为一名服务员应该是过去的事情，所以应该用一般过去时，故D项正确。