Complete the sentences using the comma where necessary. 1. If people think more about ecology.... 2. ...when we solve this problem. 3 .....if we use filters. 4 if children take care of animals ... . 5 ... if people don't destroy their habitats. 6. When I come to the country..... . 7. They will be see many species of mammals when......

1.  If people think more about ecology, our life will be safer.

2. We'll go home when we solve this problem.

3. We'll see it better if we use filters.

4. If children take care of animals, they get kinder.

5. They will survive if people don't destroy their habitats.

6. When I come to the country, I always have long walks.

7. They will see many species of mammals when they visit this museum.