Every
invention
,
from
airplanes
to
zippers
,
has
a
____________________
behind
it
.
In
1930
,
Ruth
Wakefield
and
her
husband
open
the
Toll
House
Inn
in
the
state
of
Massachusetts
.
An
____________________
baker
,
Ruth
drew
many
people
to
the
inn
for
her
delicious
desserts
.
She
used
baker's
chocolate
to
make
butter
cookies
.
Baker's
chocolate
melts
when
heated
.
One
day
,
she
saw
that
she
had
no
baker's
chocolate
left
.
She
decided
to
use
a
chocolate
candy
bar
____________________
.
She
chopped
the
bar
into
small
pieces
and
added
them
to
the
batter
.
She
thought
the
little
____________________
would
melt
in
the
oven
.
But
the
pieces
didn't
melt
.
The
cookies
came
out
of
the
oven
with
bits
of
soft
,
creamy
chocolate
in
them
.
They
were
delicious
!
Ruth
Wakefield
____________________
the
world's
very
first
chocolate
chip
cookie
.
