1. perfect behaviour, the pupils’ behaviour, to watch animals’ behaviour. The child’s behaviour was a pleasant surprise 

2. perfect behaviour, the pupils’ behaviour, to watch animals’ behaviour. The child’s behaviour was a pleasant surprise to 

3. influence people, to influence someone’s life. His speech influenced everybody. Computers have greatly influenced the world of science.

4. natural beauty, quite natural, natural food. It is only natural to love your motherland. The child has a natural talent for music.

5. Russian nature, Mother Nature, the beauties of nature. My interest is in nature, wildlife and birds. We hope Mother Nature will be kind to us and bring some rain.

6. a great number of animals, a small number of species, the right number of chairs. I have a number of English books at home. 2. One, two, three etc. are numbers. The number of rooms in the house is five.

7. A good person, any person. Every person in the room stopped talking. I know Jack as a person, not as a writer.

8. to study to be a journalist, to study science at school. He studied mathematics in one of the best universities. My dream is to study wildlife 

9. to survive the fire, to survive in the ocean. He survived in the desert for a week on bread and water. We must help these animals to survive.