1.If farmers stopped using chemicals in agricultural crops, food would be healthier.
2. If people plant (a lot of\many) trees, our environment will be creaner.
3. If you hadn't thrown botels bottles and cans, the Earth would not have been so dirty.
4. If I studied Phisics at 7 grade, now I would be a good student.
5. If now were USSR, we would live good.
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