Listening. Listen to the text and write down the words in the gaps. 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) lives easier in some way or another. Many people believe that the computer is the most (2) invention but they (3) work without electricity. Electricity has given us (4), new way of life by introducing technology into our everyday activities. (5) electricity, our lives would be (6) harder and certainly quieter. [6]​