Long
ago
,
people
use
____________________
to
communicate
.
They
mailed
letters
to
friends
and
families
.
Letters
were
carried
by
horse
and
cart
,
and
later
by
train
or
boat
.
Today
,
____________________
is
different
and
letters
are
carried
by
____________________
.
We
can
use
____________________
-
____________________
,
____________________
____________________
,
or
phone
calls
to
communicate
quickly
with
friends
and
family
all
over
the
world
.
