It was the first time such standards （ ） increased in a decade.
分类: 英语语法(00831)发布时间: 2024-08-22 09:28浏览量: 6
It was the first time such standards （ ） increased in a decade. A、had been B、were to be C、have been D、are being 【正确答案】：A 【题目解析】：过去完成时。it is the first time…和相似的结构后面的分句中，动词多用完成体。因为句子中was为过去式，所以动词用过去完成体，选A。