My daily rutine.

My day a day depends on the day of the week. -
I usually wake up at 9.00 and I have breakfast immediately. -syntax!
(ON) Class days, in the morning I study very hard in the library, then, I have lunch early. I get a bus at 3.00 p.m to go to College. -sentence structure
I stay there for seven hours approximately. My timetable is irregular.  - Sentence Fragments. what has your irregular time table have to do with your class hours?
When I finish, I go fast to English lesson. I don't have much time because there's a long distance. - vocabulary
At 10.30 p.m, I finish my hard day. I come back home, I have dinner and then, I do some exercise during 30 minutes while I'm listening to my favourite music.
After a relaxing time, I go to sleep and my fantastic day finishes there. - Is your day hard or fantastic?

"After a relaxing time" - are you saying you've relaxed for some time or you have had a relaxing time?

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My daily routine

My day depends on the day of the week.

I usually wake up at 9.00, and I immediately have breakfast.

ON class days, I spend the morning studying hard in the library, and then I have an early lunch. I get a bus at 3pm to go to College.

My time table is irregular. I stay there for approximately seven hours.

When I finish, I rush to my English lessons. I don't have much time to travel, because it is a long distance from my college.

at 10.30 pm, I finish my hard day. I come back home and I have dinner. Then I exercise for 30 minutes while listening to my favorite music.

After relaxing for some time, I go to sleep, and my (now) fantastic day finishes there.

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After relaxing for some time, I go to sleep. What a fantastic day I had! - sacarsm