标题: 885section D-8 前人未解之时态问题 求助 [打印本页] 作者: yahoochao 时间: 2010-5-11 11:15 标题: 885section D-8 前人未解之时态问题 求助 8.During an era when interracial tensions in the United States have run high, Rosa Parks became a quiet, unassuming symbol of the continued struggle for human dignity.