Составьте условные предложения со словами lead to, to prevent conflicts, resolve, listen, respect

1 Building of big plants and factories leads to pollution of the environment.

2 Great politics and heads of the countries try to prevent conflicts.

3 They recommend to resolve problems far beforehand.

4 Sally doesn't like to listen to her parents as she does not use to obey.

5 First of all you should respect your friends if you want to have a real friend.