We must prevent people from _(pollute) the river.
We must prevent people from _(pollute) the river.
We must prevent those children from running on the road
We must stop people from ___(throw)rubbish into the river
the river smells terrible,people must be stopped from throwi
We must prevent them from_ _ _(制造混乱).
We must try our best to prevent the lake from pollution.
People must plant trees to prevent sandstorm_____ A from hap
we must prevent soil from washing away 英语改错
we must take some measures to prevent the environment being
Sometimes people pollute the environment.
we must stop-_____(pollute) our earth
We must keep the air clean and never _________ (pollute,poll