Дам 50 баллов.Say in how many ways you can complete these

Дам 50 баллов.
Say in how many ways you can complete these sentences.
1) People cant live without ... .
2) People need to make our planet ... .
3) We would like to see our rivers and lakes... .
4) It is dangerous too ... .
5) There are a lot of things we can take from nature ... .
6) We pollute the environment when we ... .
7) People should always remember that ... .
8) Lets make our country ... .
9) ... need our protection.
10) Nowdays we should ... .
11) It is necessary to ... to live in a beautiful world.