ХЕЛП МИ ПЛЕС! Воткните пропущенное слово (одно): Computers are 1)

ХЕЛП МИ ПЛЕС! Вставьте пропущенное слово (одно):
Computers are 1) ... essential part of most of our lives nowadays. But computers are similar 2) ... cars. Many people can drive, but not many people know exactly 3) ... a car works. And that is why people usually 4) ... their cars serviced by a professional mechanic instead of 5) ... it themselves. Computers are the same for many people. They know how to 6) ... the 'start' button. But once something goes wrong, they have no idea how to fix it. Sometimes computers do strange things. They have a bug or crash and then they lose data because of the malfunction. But many problems are caused 7) ... human error. One type of problem is becoming more and more common. It's called 'computer rage'. People get so angry and stressed because of their computers, they're so tired 8) ... working with them all day, that they 9) ... something violent to them. One man was so angry with his laptop that he threw it down the toilet. And then he had to take the computer to a special company to get 10) ... fixed! Another laptop 11) ... destroyed by a woman who put it on top of her car when she was looking for her car keys. She got 12) ... the car but forgot that the laptop had 13) ... left on top of the car. She drove away and the computer fell onto the road. She then drove right over it! She tried to get the laptop examined 14) ... a specialist. But unfortunately computer specialists can't perform miracles.