If
I
____________________
(
be
)
you
,
I
____________________
____________________
(
study
)
harder
.
If
everyone
had
(
have
)
clean
water
to
drink
,
there
would
be
(
be
)
a
lot
less
disease
.
If
____________________
won
(
win
)
the
lottery
,
____________________
buy
(
buy
)
a
big
house
.
if
I
knew
(
know
)
his
number
,
I
____________________
give
(
give
)
him
a
call
.
____________________
____________________
do
(
do
)
it
if
____________________
could
(
can
)
.
