Aturn the underlined sentences into passive structures. 1) the windows look dirty no one has cleaned them. 2) the cat looks hungry. doubt that have fed it. 3) the dustbin is full don't hink they have colleced thenib- bish, 4) your white pullover is nice. lknow that your granny has knitted it. 5) the plants in the pots are dying. you havent watered them yet, 6) i have to go soon. john has ordered me a taxi.

1) the windows look dirty. they haven't been cleaned. 2) the cat looks hungry. i doubt that it has been fed. 3) the dust bin is full. i don't think it has been collected. 4) your white pullover is nice. i know that it has been knitted by your granny. 5) the plants in the pots are dying. they haven't been watered yet. 6) i have to go soon. a taxi has been ordered for me by john.

Maya lived in one of the most comfortable corners of our planet. they did not need warm clothes, they were satisfied with the thick and long strips of cloth with which they wrapped their bodies in a special manner. they fed mainly maize and what they extracted in the jungle, cocoa, fruit, game. they did not keep pets for movement or food. wheel was not used. according to modern concepts, it was the most primitive of the civilizations of the stone age, before greece and rome they were far away. however, the fact remains that archaeologists have confirmed that during the mentioned period, this people managed to build several dozens of amazing cities on a large enough territory, far apart. the basis of these cities is usually a complex of pyramids and powerful stone buildings, entirely covered with strange mask-like icons and various dashes. the highest of the mayan pyramids is not lower than the egyptian pyramids. for scientists is still a mystery: how these structures were built! and why were such pre-columbian civilizations perfected in beauty and sophistication suddenly suddenly abandoned, as if by command, by their inhabitants at the turn of 830 ad? at this very time, the center of civilization was extinguished, the peasants who lived around these cities, dispersed in the jungle, and all the priestly traditions suddenly sharply degenerated. all subsequent surges of civilization in this region were marked by sharp forms of power. however, we return to our topic. those very mayans who left their cities, fifteen centuries before columbus invented an exact solar calendar and developed hieroglyphic writing, used in mathematics the notion of zero. the classical mayas confidently predicted solar and lunar eclipses and even foretold the day of judgment.

My favorite school subject is english. this is not only an interesting subject, but also an important one, which is needed in life. with the help of english i can make foreign friends. also i can go to different countries, because probably everyone knows english. i can also watch films in the original, the same i can say about books and computer games. with the help of english you can listen to music in the original and understand the meaning of the text. english is important, useful and interesting, that's why this is my favorite school subject.