问题
选择题
—When _________ the car _______ ?
—Sorry. I don’t know.
A．does; invent
B．did; invent
C．was; invent
D．was; inventing
答案
答案：C
考查点：被动语态。解题思路：the car 作主语，用被动语态。
搜题请搜索小程序“爱下问搜题”
—When _________ the car _______ ?
—Sorry. I don’t know.
A．does; invent
B．did; invent
C．was; invent
D．was; inventing
答案：C
考查点：被动语态。解题思路：the car 作主语，用被动语态。