Susan
____________________
____________________
(
go
)
to
the
concert
if
her
sister
____________________
(
invite
)
her
.
If
you
____________________
____________________
(
not
leave
)
now
,
you
____________________
____________________
(
be
)
late
.
If
I
____________________
(
order
)
lunch
,
____________________
you
____________________
(
eat
)
it
?
Unless
Anne
____________________
(
see
)
the
news
,
she
____________________
____________________
(
not
know
)
the
story
.
If
your
friend
____________________
____________________
(
not
call
)
in
an
hour
,
he
____________________
____________________
(
lose
)
the
reservation
.
