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1) мы знаем, что он работает над проблемами в области космической связи.(его работа связана с проблемами).

2) если вы сделаете даже малейшую ошибку в компьютерном языке, разговор ломается и вы должны идти в начало.( наверное, имеется ввиду, ошибка в алгоритме, программа рушится и надо начинать сначала? )

3) читальный зал библиотеки конгресса - это огромная коллекция справочников.

the first us president known to all americans as "the father of the nation" was george washington.he was born in virginia into a planter's family.when he was 11 his father died.the family had a lot of land but not enough money to send george to school in england as rich families used to do at that time.george learned to ride a horse,to hunt,shoot,sail and swim.george washington began his career in the service of his county as a major in virginia militia and later became commander in chief of colonial army during revolutionary war.he was among those who wrote the us constitution in philadelphia.people respected him for his wisdom and honesty.after the war george wanted to retire and live at mount vernon where he had a beautiful house and a big platation.on april 30, 1789,before a large crowd washington promised to preserve,protect and defend the constitution of usa.this is how gw became the first president of the contry and served 2 terms.he refused a 3rd term and in 1797 he retired to mount vernon where he died 2 years later

in 2100 all children won`t go to the school. they will study at home. in 2100 all people will be able to have free flight to the space. in 2100 all people will know 8 or 9 langueges. in 2100 all people will have robots.

hanna montana is a popular singer and actris from hollywood. she is very talanted girl with beautiful voice. hanna is slim and tall.she has long blond hair and blue eyes. i think hanna is very beautiful and i want to look similar to her.