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---how long have you tired?---well,four years.But you known,I -----for Courtaulds for over forty years.a.have worked b.had w...全文
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teacherzdl：必须和现在有关系才用现在完成时，此处虽然有段时间，但是和现在没有关系，所以用一般过去式(2012-02-09 11:49)
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wujie2011：for over forty years.?不用完成？(2012-02-09 11:41)
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teacherleehom：---how long have you tired? ---well,four years.But you known,I -----for Courtaulds for over forty years. a.have worked b.h...(2012-02-09 11:35)
