Present perfect and past perfect tense.надо изменить предложения.1.nick (do) his homework by his 7 o'clock.you ever (see) the pyramids? this little boy never (see) crocodiles.when i(come) to the station yesterday, i (learn) that my train already ( leave)

1.Nick has done his homework by his 7 o'clock.2. Have you ever seen the Pyramids? 3. This little boy has never seen crocodiles. 4. When I came to the station yesterday, I had learned that my train has already left.

Дорогой Гарри, В нашей столице очень много монастырей,храмов,исторических улиц,стадионов,парков ,театров и всем известный Кремль с Красной площадью. Когда ты приедешь в Москву ты обязан посетить Красную Площадь , Мавзолей , Некрополь у Кремлевской стены ,а также другие памятники  Москвы. Тебе стоит посетить городские улицы, площади и районы исторической застройки такие Манежная площадь, Пушкинская площадь, площадь Революции, Арбат, Садовое кольцо и другие.Если ты хочешь просто прогуляться пройдись по паркам.С наилучшими пожеланиями.
Dear Harry,
In our capital lot of monasteries,temples,historic streets,stadiums,parks ,theatres and a well-known Kremlin from Red Square. When you come to Moscow you must visit to Red Square , the Mausoleum , the Kremlin wall Necropolis ,as well as other monuments of Moscow.
You should visit the city streets, squares and areas of historic buildings  such as :Manezhnaya square, Pushkinskaya square, Revolution square, Arbat area, the Garden ring and if you want to just take a walk take a walk around the parks.
With best wishes.
(Сюда напишешь свое имя)

My favourite writer was Christopher Paolini . He was born on 17 November 1983 in Southern California. His mother Talita Hodgenson was a teacher and hif father Kanneta Paolini wasa literaryman .He also has a younger sister Angela Paolini. Later  the family moved to Peradayr Valley, Montana. Christopher was educated at home with her mother.   As a child, he often wrote short stories and poems . all his free time he spent in the library, and when he was 16 years old he had read more the 3000 books. 
At the age of 15  he wrote a fanasy novel Eragon. Only for  one week it was sold in 250000 copies thet become the best-seller among teenagers. Thenovel was published in 37 countries. On 27 May, 2011 christopher was awarded the Guiness World Record as the Youngest author who has sold a record number of books in the world