—Iwonderwhatmakesyouagoodsalesperson.—I

问题详情：

 — I wonder what makes you a good salesperson.

— I ________ as a waiter for three years,which contributes a lot to my today’s work.

e                       ed                            served                   served

【回答】

B

知识点：动词时态与语态

题型：选择题