Unless your friend
to have been
an invitation, he
not to be able to
go to the party.
She
to be
late for the lesson if she
not to leave
earlier.
If you
to be
angry, they
not to let
you in the house.
He
not to open
the book unless he
to know
what tasks to do.
We
to have to
stay home if the weather
to get
worse.
Unless you
more careful with the knife, you
yourself.
If I
tell
you a secret,
will you promise
to keep it?
If my mother
not to have to
work next weekend, we
to be able to
go to the funfair.