A business corporation is an institution established for the purpose of

A business corporation is an institution established for the purpose of making profit. It is operated by individuals. Their shares of ownership are represented by stock certificates. A person who owns a stock certificate is called a stock-holder. Задание :найдите предложения с пассивной конструкцией, обусловьте видовременную форму глагола-сказуемого. Переведите предложения на российский язык.