Question

Trees are an essential part of our world. They provide homes for insects and birds,
wood for building and the ingredients for making paper. But most importantly,
they keep our air clean by turning carbon dioxide into the oxygen that we need
1) ................... breathe. Every part of a tree plays a specific role:​

Answer 1

1) to

6) and

7) into

8) to

Должно быть верно.