We should take care of the earth ____ we can make a better world to live in.( )
A.so thatB.untilC.even ifD.while
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
Boys and girls, you should look after________when your parents are not at home.( )
himself
herself
yourselves
themselves