Выясните роль отечественного машиностроения в настоящее время.

1.    If we … (planted) more new forests, we would save) wild animals.
2.    If she … (finished) her research, she would take part) in the conference.
3.    If I were you, I would visit) the old man.
4.    If I were you, I would join) Greenpeace.Complete