◎ 题干
—When _______ the car _______?
—Sorry. I don't know.
[     ]
A. does; invent
B. did; invent
C. was; invented
D. was; inventing
◎ 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“—When _______ the car _______? —Sorry. I don't know. [ ]A. does; invent B. did; invent C. was; invented D. was; inventing …”主要考查了你对  【被动语态】【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。