王老师:19139051760(拨打)复制微信 题目 更新时间:2023/4/3 11.(4分)A man escaped from the prison last night. It was a long time ____________ the guards discovered what had happed. A. before B. until C. since D. when 答案 登录 注册 答案A 出自:其他 >> 兰州大学大学英语4 兰州大学继续教育学院