Was
the
evolution
____________________
language
a
sound
or
a
gesture
?
Then
it
later
changed
____________________
words
.
They
wait
____________________
the
other
chimps
to
look
at
them
.
They
look
____________________
friends
first
.
This
is
similar
____________________
human
language
.
He
thinks
the
research
____________________
sounds
is
very
little
.
He
says
,
?
Chimps
point
____________________
where
they
want
to
be
groomed
.
Katie
Slocombe
thinks
the
correct
answer
will
be
a
combination
____________________
both
.
