一个英语句子的省略情况-----务必高手解答
Mrs.White showed her students some old maps（borrowed from the library）.
括号里的是后置定语,是定语从句的省略,请补充完整.谢谢我觉得应该是Mrs.White showed her students some old maps WHICH HAD BEEN borrowed from the library.因为先要借来,在给同学们看.有时间的先后顺序但好多人都说是：Mrs.White showed her students some old maps WHICH WERE borrowed from the library.