She was deeply troubled and you ________ her about it.
A. shouldn't have told
B. dare not tell
C. can't have told
D. wouldn't have told
You ________ alcohol(酒) when you drive.
A. needn't drink
B. mustn't drink
C. shouldn't have drunk
D. won't have drunk
I told him I was very sorry for what had happened and admitted I ________ that joke.
A. can't have made
B. needn't have made
C. shouldn't have made
D. won't have made
Tom is only four years old; I ________ leave him alone at home.
A. dare
B. daren't
C. dare to
D. daren't to
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