Письмо по языку на тему мой компьютер 7 класс

My computer.
My computer is very good. He can go online, there are a lot of advantages: you can find any information, and you can communicate at a distance..
And of course there are disadvantages:if you sit at the computer, you may receive the dryness of the eyes may be injured on the brain.
But I try many time not to hold him, because I'm worried for his health.