They must have finished the work by the end of last month, ______?
#64447
A
hadn’t they
B
mustn’t they
C
haven’t they
D
didn’t they
推荐题目
—Will people live to be 200 years old?—____________.
#60314
A
No, they aren’t.
B
No, they won’t.
C
No, they don’t.
D
No, they can’t.
Nothing he did was helpful to solve this problem, _______?
#64891
A
didn’t he
B
was it
C
wasn’t it
D
did he