Mr. Mao, who     as a construction worker for over 8 years, is now a distinguished lawyer in this country.
A．has workedB．had worked C．workedD．has been working
C

試題分析：句意：毛先生，曾經(jīng)作為一名建筑工人工作了8年，現(xiàn)在是這個國家著名的律師。表示發(fā)生在過去的事情，故用一般過去時，選C。
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