Ответы
It's very difficult to decide which invention has changed human life the most. It's impossible to choose just one because most inventions have made 1) our lives easier in some way or another. Many people believe that the computer is the most 2) useful invention but they 3) don't work without electricity.
Electricity has given us 4) a new way of life by introducing technology into our everyday activities. 5) Without electricity, our lives would be 6) darker, harder and certainly quieter.
However, perhaps the invention that has helped us the most is the lift or elevator. People built high-rise buildings 7) before elevators existed but they were very impractical. Today it's 8) much easier to go up to the top of 9) these structures. On the other hand, people have lost yet 10) another opportunity to do some exercise and 11) improve their health.
Лишние слова: very, something