Sanders
____________________
____________________
____________________
/
____________________
____________________
test
his
new
car
soon
.
(
obligation
and
necessity
)
People
____________________
____________________
____________________
____________________
go
to
Mars
next
year
.
(
ability
or
possibility
)
In
the
future
,
we
____________________
____________________
____________________
/
____________________
____________________
colonise
new
planets
to
ensure
our
survival
.
(
obligation
and
necessity
)
You
____________________
____________________
____________________
/
____________________
____________________
do
your
homework
next
week
.
(
no
obligation
/
no
necessity
)