If we _____ take environmental problems seriously,the earth _______ worse and worse.( )
A.don't; won't beB.won't; isn't
C.won't; isD.don't; will be
The bank is the left of the supermarket. It's not far.( )
in
for
on
at
The wild animals are in danger now. Let's protect .( )
they
them
their
theirs
What nice day! Let's go for a picnic.( )
a
an
the
/
Wow! The school uniforms can tell parents_______!
Cool! So the children won't get lost easily.( )
where are their children
where their children are
what do their children study
what their children study
Nobody can hear you______ you speak in a louder voice.( )
unless
if
when
after