Определить видовременную форму и залог глагола-сказуемого в каждом предложении: 1. The free market is one way for society

1. The free market is one way for society to solve the economic problems as to what, how and for whom to produce. - Present Simple Active Voice. 2. A change in demand takes place when one of the factors assumed constant change. - Present Simple Active Voice, Past Simple Active Voice. 3. We got this information and tried to change our priorities for business. - Past Simple Active Voice. 4. We will try to decrease the rate of unemployment next year. - Future Simple Active Voice.