I/
1.using/will run
2.littering/putting
3.will die/fishing
4.sprayed/kill
5.will die/are polluted
II/
1.on/to
2.at/with
3.to/off
4.with/to
III/
1.If we plant trees ,the streets will have shade and fresh air
2.I think we should use electric cars to minimize air pollution
3.The village was completely destroyed by the floods a few months ago
4.He is disapointed because the seaside resort is full of trash
5.Nowadays people have to wear gauze masks in the streets as there is much axhaust fume
6.If we use fewer private vehicles,the envinronment will be less polluted
