Английский язык, 7 класс

По правилам сайта в одном вопросе может быть выполнено одно задание. Выполняю первое, остальные задайте, пожалуйста, отдельными вопросами. I don't think it is good when rivers are polluted rainforests are cut down water is wasted the countryside is spoilt ozone is destroyed animals are disturbed towns are built instead of forests I think it is good when new trees are planted energy is saved ozone levels are studied air pollution is reduced