Много ответить коротко на вопросы заранее : 3 what invention you consider the most important? what devices you often use and what for? why it is difficult for people to do without computers and mobile phones? ?

I think the Internet was one of the most important inventions in our world. It helps to find and to exchange information quickly.
I use many devices every day: phone to communicate with my parents and my friends, tv to watch the news and movies, the Internet to search for the information I need.
I can not imagine my life without computer and mobile phone. It helps to communicate faster.

I think that the most important invention is a computer
most often we use the computer to get a new phone information to communicate with people
because people are accustomed to this device without these techniques life seems boring