1
.
Many
road
accidents
are
caused
by
____________________
speed
.
2
.
We
should
____________________
on
the
negative
effects
of
pollution
if
we
want
to
save
out
planet
.
3
.
The
company
"
NIKE
"
____________________
out
a
survey
of
125
customers
.
4
.
____________________
like
smartphones
and
tablets
sell
more
than
laptops
.
5
.
Blue
whales
have
an
incredibly
slow
heart
____________________
at
8
beats
per
minute
.
6
.
Park
the
car
and
____________________
off
the
engine
.
7
.
The
web
____________________
useful
information
for
school
projeects
.
8
.
Vicky
taught
us
a
____________________
lesson
about
friendship
.
9
.
Researchers
have
found
that
peer
____________________
is
to
blame
for
many
suicides
.
10
.
It's
____________________
to
rain
tomorrow
.
11
.
When
it
____________________
to
birthday
presents
,
everyone
loves
a
gift
voucher
.
12
.
Convenience
is
the
main
____________________
of
online
shopping
.
