Fill in prepositions where necessary to complete the sentences. 1)people have always studied living their natural environment. 2)how does our environment our children? 3)i don't think people living isolation could be happy. 4)ecologists study what happens different species of birds and animals. 5)my father's influence me was great. 6)my interest lies nature .i am fond animals. 7)it's not easy it collect information this species of plants. 8)mr brown is 92 years old but he is good health. 9)what's the number children in your family? 10)ecology is a science our environment.

1)People have always studied living things in their natural environment. 
2)How does our environment influence our children?
3)I don't think people living in isolation could be happy.
4)Ecologists study what happens to different species of birds and animals.
5)My father's influence on me was great.
6)My interest lies in nature .I am fond of animals.
7)It's not easy it collect information about this species of plants.
8)Mr Brown is 92 years old but he is in good health.
9)What's the number of children in your family?
10)Ecology is a science about our environment.