You
have
about
30
minutes
to
answer
each
question
.
You
must
take
account
of
how
many
marks
are
available
for
each
part
when
you
answer
it
.
Even
if
you
think
you
can
write
more
,
don't
spend
15
minutes
answering
a
part
worth
only
5
marks
.
Leave
space
at
the
end
of
your
answer
and
come
back
to
it
if
you
have
____________________
to
spare
later
.
And
if
you
can't
think
of
an
answer
to
some
part
,
leave
a
space
and
move
on
to
the
next
part
.
Don't
write
about
something
else
if
you
don't
know
the
correct
answer
?
?
this
is
just
a
waste
of
your
____________________
time
(
and
the
examiner's
)
.
