What modal can be used ?
shouldn't
mustn't
couldn't
can't
What modal can be used ?
must
couldn't
have to
should
What modal can be used ?
could
am able to
couldn't
should
What modal can be used ?
can
may
must
couldn't
What modal can be used ?
couldn't
must
can't
have to
What modal can be used ?
mustn't
don't have to
are not able to
shouldn't
What modal can be used ?
can
have to
could
may
What modal can be used ?
should
couldn't
May
mustn't
What modal can be used ?
mustn't/might/
may not/could
can/should
can't/must
What modal can be used ?
can
must
might
may
What modal can be used ?
have to
can
must
had better
What modal can be used ?
shouldn't
may
should
could
What modal can be used ?
have to
must
may
couldn't