1)Change the folloving sentences using the Passive Voice
1. Patent protections are creating another barried to trade.
2. Privately owned firms are providing an essential public service.
3. Consumers and producers are exchanging the goods in many competitive markets at this time.
4. Businesses are developing a service now.
5. The ice-cream company is driving down the prices.
2) Replace the infinitives in brackets by the Present Continuous Tense(the Passive Voice)
1. Higher returns (to earn) by business.
2. The principal kinds of market structures (to describe) now.
3. The customers (to treat) in the best now.
4. The wealth (to use) to dominate the oil market at this time.
5. The patent holder (to pay) now for permission to use the process or find a new method of production not covered by existing patent.
