◎ 题干
The Roman Empire _____ for several centuries.

A. exists
B. existed
C. was existed
D. is existing
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“The Roman Empire _____ for several centuries. [ ]A. exists B. existed C. was existed D. is existing …”主要考查了你对  【一般过去时】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。