she ( )as an animal trainer since 2003 用worked 还是has work edworked 与has worked 的区别

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she ( )as an animal trainer since 2003 用worked 还是has work edworked 与has worked 的区别
she ( )as an animal trainer since 2003 用worked 还是has work ed
worked 与has worked 的区别

she ( )as an animal trainer since 2003 用worked 还是has work edworked 与has worked 的区别
出现since+一段时间,是现在完成时的标志,意思是“自从……以来”.
答案是has worked