1 . He___ have attended the meeting this morning. He has been staying at my home for a whole day.

A．can’t

B．mustn’t

C．shouldn’t

D．needn’t

2 . You _____ her in her office last Friday, she’s been out of town for two weeks.

A．needn’t have seen	B．must have seen
C．might have seen	D．can’t have seen

3 . She ________the film, for she knows nothing about it.

A．can’t see

B．can’t have seen

C．must see

D．mustn’t have seen