I heard that some patients who had undergone laser eye surgery experienced sudden losses of vision, ______?
#64796
A
didn’t I
B
hadn’t they
C
didn’t they
D
isn’t it
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---Oh, your computer is so nice. ____ did you buy it?---Thanks. I bought it in Wangfujing Dajie.
#60070
A
When
B
Where
C
Which
D
Whose
The employee must have been dismissed by the employer last month, ____ he?
#65479
A
haven't
B
hasn't
C
didn't
D
wasn't