Упражнение поставить наречие на нужное место в предложении и перевести. 1. He speaks (softly) 2. She’s beautiful (amazingly) 3. We love her sense of humor (absolutely) 4. Sam about his salary (often complains ) 5. She him what had happened (then told ) 6. He’s ready to help (always) 7. Did he have tea for breakfast? (usually) 8. Mary is depressed (again — Oh, she is (always ). 9. Must he come here at 8 o'clock? (always ) — Yes, he must (always ). 10. My neighbours go out in the evening (usually)

1. First problem it's "dirty water". We should make some factories for clean our water. Without water we can't live. Water important in our life.
2. Second problem it's with air. Our air very dirty and we should clean her. We must grow a lot of trees , they clean air and make better. 
3. Third problem with animals. Every day , die a lot of animals. People kill they. We must feed they. One main problem for animal it's , they haven't got home , people destroy trees.
4. Fourth  problem it's waste. We can find waste in city , town and streets. People every day throw away a lot of plastic bags , bottles and more other materials. We must make some factories for recycle waste.
Вот короче 4 проблемы. Должно хватить.