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can ; can; must must; must; can can; must; must can; must; can
A. can’t；gone can’t；been may not；been mustn’t；gone
rich important famous an adventure
I think he’s I’ve thought he’s been I thought he was I’d thought he’d been
must have been could have been would be might be
A. can’t, gone can’t, been may not, been mustn’t, gone
a such man like a such man as such a man as such a man like
Judged from Judged Judging from Judging
needn’t he mustn’t he doesn’t he isn’t he
was a policeman wanted to kill Nick was Nick’s boss wanted the envelope
A.can’t； gone can’t； been may not； been mustn’t； gone
against, could over, would beyond, should behind, must
dangerous heavy important funny
must be can’t be may be mustn’t be
would've should've must've could've
could hurt might hurt must have hurt might have hurt
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