----Mary broke up with me!----You ______ have forgotten about the Valentine's Day.
#86982
A
shouldn't
B
couldn't
C
needn't
D
mustn't
推荐题目
—What happened to the young trees we planted last week?—The trees _      well, but I_        them.  
#86829
A
might grow; hadn't watered
B
needn't have grown; didn't water
C
would have grown; didn't water
D
would grow; hadn't watered
He ought to win the first prize, _____ he?
#90129
A
oughtn’t
B
shouldn’t
C
mustn’t
D
both A and B
 — Did you make it at last?— Yes. But for your help,it _____ a serious loss.
#86383
A
. had caused
B
ust have caused
C
. would have caused
D
ay cause