we should prevent people ____shooting ___birds.
we should prevent people ____shooting ___birds.
we should prevent people()down
1.we should prevent people ______drop litter here and there
15.We should prevent pollution_____happily.
People should eat______fat to prevent the ri
we should prevent pollution____a happy life.
We should prevent fire( )(burn)the house.
We should prevent pollution ___ happily.
What should we do to prevent AIDS
What should we do to prevent AIDS?
We should prevent them ___________ (pour) waste water into t
what measures should we take to prevent sandstorm coming?