Very good! I'm not sure if you wanted English corrections or Russian translations. I don't speak Russian, but I wrote some English corrections. CORRECTIONS 1) "I find THAT Internet technologies are very useful..." "I find Internet technologies TO BE very useful..." "I find THAT the Internet IS very useful because IT HELPS me in my studies" "I find the Internet TO BE very useful because IT HELPS me in my studies" 2) "I spend too much time ON the Internet." 3) "I could spend even more time ON IT." 4) "It's good for my health because I don't go on the street." "... on the streets." 5) "If I DIDN'T HAVE a SMARTPHONE, I would DIE." Try writing a Notebook!

I'm taking some liberties here but I believe I'm fairly on track with what your trying to say. if you could provide context to what you are looking at I could narrow down the sentences with certainty. 1. I find using the internet is very useful for my studies. 2. I spent to much time on the internet. 3. I could spend even more time on the internet. 4. It's safer to search the internet for information than to travel for it. 5. I couldn't imagine living without the internet. or 5. If I didn't have my phone I might have died.