Is
it
very
difficult
to
____________________
a
boat
?
It
costs
thorty
euros
to
____________________
a
car
for
the
day
.
If
they
____________________
the
forest
,
many
animals
will
die
.
Don't
forget
to
____________________
your
swimming
costume
with
you
!
People
cannot
____________________
without
water
for
very
long
.
I
hope
scientists
____________________
____________________
what
the
problem
is
soon
.
