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Through years of hard work, Mrs. Smith, who ____ as a secretary for five years, is general manager of the company now.

A．servesB．servedC．has servedD．had served

B

解析試題分析：考查時態(tài)。根據(jù)句意可知史密斯女士當秘書5年，是過去的事實，故用一般過去時。句意：通過多年的努力，當了5年秘書的史密斯女士，現(xiàn)在時公司總經(jīng)理了。故B正確。
考點：考查時態(tài)

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