Перефразируйте предложения, употребив субъектный инфинитивный оборот.
Model: It is said that they live in Moscow. – They are said to live in Moscow. It is known that he is a good man. – He is known to be a good man.
1. It is known that many books are published in our country every year. 2. It is said that the Moscow Underground is the finest in the world. 3. It was believed that the poem was written by an unknown soldier. 4. It is supposed that the playwright is working at a new comedy. 5. It is said that this mineral water is very good for the liver.