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can’t; may couldn’t; have to can’t; have to couldn’t; may
can't; may couldn't; have to can't; have to couldn't; may
Must; may not; have to May; mustn’t; can Should; can’t; may Must; needn’t; have to
could borrow may borrow could have borrowed may have borrowed
have to, may be, may needn’t, may have to, must
Must ; may Could ; might May ; must have Can ; may have
mustn’t；can needn’t；must don’t have to；may can’t have to；may
may have needn’t have couldn’t have must have
Sorry, he is busy at the moment. Why didn’t you call earlier? Certainly, may I have your name? Sorry, he doesn’t want to see you.
may take may have been taken away must have taken away needn’t have been taken away
can’t; may couldn’t; have to can’t; have to couldn’t; may
may; can’t can; may not may; mustn’t can; don’t have to
mustn’t needn’t can’t may not
have to, may be, may needn’t, must have to, must
may have needn’t have couldn’t have must have
may not needn't can't don't have to
must have borrowed；wasn't using may have borrowed；didn't use should have borrowed；hadn't used could have borrowed；wasn't using
Must; can May; must Must; must May; may
Can’t; can’t Could; won’t May; daren’t Shall; may
can be; mustn't be may have been;must have been may have been; can't be must have been ; can't have been
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