помогите!!!!!!!!!!!!

alinaa1739: 1. Humans believe either in one god or in may others gods,
2. What ecological factors can influence on a person?
3. In our laboratory we observed a lot of physical and chemical phenomenon.
4. We must know that learning English language will help us in the future.
5. We are watching the cat playing with it's tail.
6. Parents should show good examples for modeling their children's behaviour.
7. These recent discoveries in Egypt can answer to many unsolved questions.

alinaa1739: 8. No matter how busy the traffic on the streets could be, you have to be careful while crossing them.
9. Much fishes are kept in this aquarium.
10. The letter has being already written and we can send it at last.

alinaa1739: В каждом предложении есть одна грамматическая ошибка. Найдите её . Переведите на русский язык получившиеся предложения.
ПОМОГИТЕ !!!!!!!!!!