* we should _____our classroom every day to kee
* we should _____our classroom every day to keep it _____
a.clean clean
b.cleans clean
c.cleaned cleaned
d.clean cleaned
* climbing the hill will be _____
a.great fun
b.a great fun
c.great funny
d.very funny
* here comes the bus.let us_____
a.get on it
b.get it on
c.to get on it
d.to get it on