Use Present Simple, Present Continuous, Present Perfect or Present Perfect Continuous, 1. What they (to do) now? — They (to work) in the reading room. They (to work) there for three hours already. 2. Where he (to be) now? — He (to be) in the garden. He (to play) basketball with his friends. They (to play) since breakfast time. 3. I (to live) in Kyiv. I (to live) in Kyiv since 1990. 4. This is the factory where my father (to work). He (to work) here for fifteen years. 5. You (to find) your notebook? — No! I still (to look) for it. I already (to look) for it for two hours, but (not yet to find) it. 6. You (to play) with a ball for three hours already. Go home and do your homework. 7. Wake up! You (to sleep) for ten hours already. 8. I (to wait) for an answer from my cousin for a month already, but (not yet to receive) it.
9. This man (to be) a writer. He (to write) books. He (to write) books since he was a young man. He already (to write) eight books. 10. What you (to do) here since morning? 11. Lena is a very good girl. She always (to help) her mother about the house. Today she (to help) her mother since morning. They already (to wash) the floor and (to dust) the furniture. Now they (to cook) dinner together. 12. He (to run) now. He (to run) for ten minutes without any rest.

1. For thousands of years people lived in harmony with environment and it seemed to them that natural riches were unlimited 2. Large cities with thousands of smoky industrial enterprises appear all over the world today. 3. The by-products of their activity pollute the air we breathe, the water we drink, the land we grow grain and vegetables on. Every year world industry pollutes the atmosphere with about 1000 million tons of dust and other harmful substances. 4.Many cities suffer from smog. Vast forests are cut and burn in fire. Their disappearance upsets the oxygen balance. As a result some rare species of animals, birds, fish and plants disappear forever, a number of rivers and lakes dry up. 5. The consequences of this explosion at the atomic power-station are tragic for the Ukrainian, Byelorussian and other nations. 6. As many as 159 countries — members of the UNO — have set up environmental protection agencies. Numerous conferences have been held by these agencies to discuss problems facing ecologically poor regions including the Aral Sea, the South Urals, Kuzbass, Donbass, Semipalatinsk and Chernobyl. An international environmental research centre has been set up on Lake Baikal.

Mikhail Kutuzov, the most famous Russian commander, who was born in 1947 into a noble family of Senator Hilarion Matveyevich Kutuzov. Despite the status the only son Have and raise young Michael was rigid enough.
Already at the age of fourteenhe enrolled into a noble Academy, where his father taught. A year after entering the Academy, young Kutuzov gets low rank (conductor class 1), and he is being paid a modest salary. After graduation in 1961 at the rank of engineer Ensign, Kutuzov is to teach mathematics at the Academy.
In 1968, Kutuzov took part in the Turkish war, in which is formed by military tactics and style of Mikhail Kutuzov.In 1974, by fighting in the Crimea, Kutuzov received a severe wound, the bullet passing in the temple, goes under the right eye. After a serious injury Kutuzov put on a bandage, at which is depicted on all portraits.
In the summer of 1811 Kutuzov gets position commander Army, which he heads the, having arrived in Bucharest. Due to their knowledge, to the talent and unordinary mind of, Kutuzov quickly develop literate military tactics that resulted in half a year to a crushing defeat the enemy army in November 1811.
The war with France for Kutuzov starts as chief of the Moscow home guard.During a battles, Kutuzov brilliantly proves his talent of the commander, which ultimately leads to the rapid retreat of the French army. The victory was won for the commander is very "high price". In April 1813, destructed constant colds and lack of energy, Kutuzov died.
Михаил Илларионович Кутузов, самый прославленный полководец России, родился в 1947 году в знатной семье сенатора Иллариона Матвеевича Кутузова. Несмотря на статус единственного сына, воспитание юный Михаил получил достаточно жесткое. 
Уже в четырнадцать лет он поступает в Дворянскую академию, где  преподает его отец. Спустя год после поступления в Академию, юный Михаил Илларионович получает невысокий чин (кондуктор 1-го класса), и  ему платят скромное жалование. Закончив обучение в 1961 году в звание инженер-прапорщика, Кутузов остается преподавать в Академии математику.В 1968 году Кутузов принимает участие в Турецкой войне, в которой формируется военная тактика и стиль Михаила Илларионовича.В 1974 году, сражаясь в Крыму, Кутузов получает тяжелое ранение: пуля, пройдя в висок, выходит под правым глазом. После такой серьезной травмы Кутузов  надевает повязку, с которой  изображен на всех портретах.Летом 1811 года Кутузов получает должность главнокомандующего армией, которую он и возглавляет, приехав в Бухарест.  Благодаря своим знаниям, таланту и неординарному уму, Кутузов быстро разрабатывает грамотную военную тактику, приведшую уже через полгода к сокрушительному поражению армии врага в ноябре 1811 года. Война с Францией для Кутузова начинается в должности начальника Московского ополчения. Во время сражений, Кутузов блестяще доказывает свой талант полководца, что в конечном итоге приводит к быстрому отступлению французской армии. Победа была выиграна для полководца очень «высокой ценой». В апреле 1813 году, подорванный постоянными простудами и упадком сил, Михаил Илларионович умирает.