My computer ____start, no matter how hard I try.-lt might have crashed.
#62243
A
won't
B
shouldn't
C
mustn't
D
wouldn't
推荐题目
---Must I learn the new words in heart today?---No, you _______. You ______ do it tomorrow. 
#74845
A
needn’t; may
B
mustn’t; must
C
mustn’t; may
D
needn’t; mustn’t
You _____ her in her office last Friday, she’s been out of town for two weeks.
#62649
A
needn’t have seen
B
must have seen
C
might have seen
D
can’t have seen