The
Wheel
It
is
often
described
as
the
most
____________________
invention
of
all
time
.
It
was
very
important
for
transport
,
agriculture
and
____________________
.
At
the
beginning
wheels
were
on
____________________
and
chariots
with
oxen
or
____________________
.
The
wheel
can
be
____________________
by
people
,
animals
,
wind
or
____________________
and
it
can
be
used
for
many
____________________
.
For
example
in
the
____________________
river
there
is
a
big
____________________
which
was
moved
by
the
water
and
it
was
used
to
make
____________________
.
