—My goodness! The accident might not have happened if we had done it more carefully.—But we      .
#87618
A
haven’t
B
wouldn’t
C
hadn’t
D
didn’t
推荐题目
If we _______ adequate preparations, the conference wouldn’t have been so successful.
#87422
A
haven’t made
B
wouldn’t make
C
didn’t make
D
hadn’t made
He ought to win the first prize, _____ he?
#90129
A
oughtn’t
B
shouldn’t
C
mustn’t
D
both A and B