Определите видовременную форму глагола в предложении. Предложения переведите.

1. The company has been manufacturing goods from raw material it buys itself for 2 years already.
2. He opened a sole proprietorship several years ago.
3. A good friend of mine has signed recently the agreement on joining a partnership uniting attorneys.
4. A stockholder is a person who possesses shares or stocks belonging to some corporation.
5. Many countries make a clear distinction between public and private companies.