2 The rule was explained to us by him.
3. The bed wasn't slept in.
4. She can’t dance when she is being looked at.
5. What song was sung to you by them?
6. The picture was being looked at with admiration.
7. All his old notebooks have been thrown away by him.
8. The matter must be thought over.
9. The Dean has been spoken to on the subject.
10. This film is being talked a lot of.
11. His jokes are always laughed at.
12. The incident was argued about for a long time.
13. Such matters cannot be spoken of.
Объяснение:
1. It was difficult to build very tall buildings because the bricks were not strong enough.
2. People started to build skyscrapers when the first one was opened in Chicago in 1885.
3. After the invention of the elevator in 1852 it was no longer a problem to get to any floor of the building.
4. Skyscrapers are an excellent opinion for providing big cities with living places for families and offices for businesses.
5. The word "skyscraper" comes from the name sailors gave to the tallest mast on a ship.
6. 3400 men built Empire State Building in 14 month.
7. The Triumph of Astana includes 39 floors with shops, offices, apartments and a hotel.
