It was thirty years he was invested as an outstanding alumnus to celebrate the 128th anniversary of

查询谷 - www.chaxungu.com

编辑：chaxungu时间：2026-04-27 02:54:45分类：高中英语题库

【题目】It was thirty years _______ he was invested as an outstanding alumnus to celebrate the 128th anniversary of the university.

A. as B. while C. before D. until

在线课程

【答案】

【解析】C

试题分析：考查连词。句意：过了三十年他作为一名优秀的校友出席大学128年校庆。It be 时间段+before，过了多少时间才。。，故选C项。