Write sentences or questions using the present perfect : 1. She create a great webpage. 2. Which films\you see? 3. They \ not log on to your webpage. 4. Why Tim sell\ his \ laptop? 5. My cousins\ not chat on the internet. 6. You ever use \ a webcam? 7. My friend \ send me a lot of \ emails.

Have been tested - Новые три вагона поезда-цистерны были испытаны в суровых зимних условия на ж/д в Аляске.
will have been completed - Строительство моста и дамбы будет закончено к началу сезона навигации.
are being constructed - В настоящее время в Европе и Азии строятся 2500 км скоростных линий.
maintains - система кондиционирования воздуха всегда поддерживает оптимальную температуру и влажность в вагоне.
is being built - В настоящее время новая высокоскоростная железнодорожная линия строится на севере России. 
has caused - Потоп значительно повредил железнодорожную ветку.

I want to say a few words about the city of Los Angeles. Los Angeles is also called LA, the city of angels, the world's entertainment capital and the capital of American gangs. LA is located in the United States, California. It's always warm in the city of angels, but this does not mean that you can swim in the Pacific ocean all year round. The city has many attractions. For example, Hollywood, Madame Tussaud's Museum, Union Station, the Kodak Theater, Path/Walk of Fame, etc. I have chosen this city of all the USA's cities because I am really eager to visit it.