—When _______ the car _______? —Sorry. I
题型:选择题
问题:
—When _______ the car _______?
—Sorry. I don't know. [ ]
A. does; invent
B. did; invent
C. was; invented
D. was; inventing
—When _______ the car _______?
—Sorry. I don't know. [ ]
A. does; invent
B. did; invent
C. was; invented
D. was; inventing