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-I wonder what makes you a successful manager. -I as a waiter for five years.whi

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-I wonder what makes you a successful manager. -I as a waiter for five years.whi

 —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

 

试题答案

【答案】

D

【解析】

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