. Rephrase the following sentences using the Complex Subject. Write them down. E.g. We heard that a car stopped outside the door. A car was heard to stop outside the door. 1. People consider the climate there to be very healthy. 2. It is expected that the performance will be a success. 3. It is said that the book is popular with both old and young. 4. It is supposed that the crops will be rich this year. 5. It is heard that this mineral water is very good for the liver. 6. Scientists consider that electricity exists through¬out space. 7. This scientist considers that his invention is very important. 8. It is reported that the new rocket will go into operation next year. 9. It is supposed that this type of rocket has many advantages. 10. They say that he is a good translator. 11. They expect that many new books will be published soon. 12. It is said that Ann speaks English well. 13. It is supposed that he lives here.

Russia's flora is beautifully varied. The vascular plants of Russia number approximately 11 400 species made up of 1 488 genera and 197 families. Endemic plant species make up about 20% of these numbers. The flora of Russia also features 3 classes of mosses. 3 000 species of lichen are found in the country.
Russia's flora biodiversity has also resulted in diversity as regards its fauna. Unfortunately invertebrates, such as insects, have not been well documented in Russia, thus the inventory of fauna is incomplete. Vertebrates, however, have received greater attention and over 1 300 species have been documented. Mammals number about 276 species with 22 endemic to Russia. Birds have been counted at 732 species with only 1 endemic. 75 reptile species are documented as well as 27 amphibian species. Fish have been counted at 400 species. The highest levels or mammal diversity are found in southern Siberia, southern Far East and Northern Caucasus.

1. In the XIII century there were over 160 towns in England.

2. Before the XIII century there were no universities in England. The oldest university was founded in Oxford in 1667. It remained the principal centre of science for centuries. It was famous for the superior learning of its professors who had a great influence on the development of English culture.

3. Sheep breeding became especially popular in the English eastern and northern counties in the XIII century. It was soon discovered that it was easier to grow wool on the sheep's back than to grow grain on the poor lands. There were many foreign markets which were ready to buy English wool. It meant that European trade was developing.

4. There were important changes in the English countryside in the XIII century. There were new classes of gentry, nobles and small landowners. There were many armed conflicts between the peasants and the feudals. There was one reason for that: the lords tended to monopolize the use of common lands. It was natural that the parliament supported the rich because only the top layer of the population was represented there.