When I finished middle school studying, I left my hometown and studied at a specializedin a ( private / selective ) secondary school which is in the city l now live in now.

My hometown is about 70 kilometers away from the city, so I could only go back to my home on summer breaksduring the summer and winter breaks.

I didn't have much pressure on studies when I was in that specializede selective school, because students who were accepted by specialized schools meant that theythese schools already gothad the qualification to work for the government after completing three years of studying.

Therefore, life in that specialized schoolthere was very different from when itI was in middle school.

Learning to sing new songs almost became a habit of every student.

Each of themstudent would have a notebook that was used to write down some new songs.

I remember there was a movie back then called "A Sweet Career" and the movie had the theme musicsong called "Our Lives are Full of Sunshine", which was a little popular.

So I learned to sing it and after a while ofsome practice I could pull it off.was word perfect.

InDuring the summer break, I went back to my village.

One night, I slept with the other teenagers on the threshing ground.

When I finished middle school studying, I left my hometown and studied at a specialized secondary school which is in the city l live in now.

You could also say "...a specialized secondary school where I live now."

My hometown is about 70 kilometers away from the city, so I could only go back to my home on summer breaks and winter breaks.

I didn't have much pressure ton studiesy when I was in that specialized school, because students who were accepted by specialized schools meant that they already got the qualification to work for the government after three years of studying.

You could also say "...students who were accepted by specialized schools already studied for three years to get the qualification to work for the government."

Therefore, life in that specialized school was very different from when it was in middle school.

Learning to sing new songs almost became a habit of almost every student.

The way you wrote it makes it sound like every student got close to making that a habit. What you more likely mean is that almost all of the students made it a habit, but some of them didn't.

Each of them would have a notebook that wasthey used to write down some new songs.

I remember there was a movie back then called "A Sweet Career" and the moviethat had thea theme musicsong called "Our Lives are Full of Sunshine"," which was a little popular.

"Theme music" would refer to multiple songs. You're talking about just one song, so "theme song" is the correct term. The rest of the corrections are stylistic.

So I learned to sing it and after a while ofsome practice I could pull it off.

You could also say, "after a lot of practice" or "after a little practice" depending on how much practice it took.

InDuring the summer break, I went back to my village.

When I finished middle school studying, I left my hometown and studied at a specialized secondary school which is in the city l live in now. I still live there today.

My hometown is about 70 kilometers away from the city, so I could only go back to my home on summer breakshome during the summer and winter breaks.

I didn't have much pressure ton studiesy when I was in that specialized school, because students who were accepted by specialized schools meant that they already gothad the qualifications to work for the government after three years of studying.

Therefore, life in that specialized school was very different from when it was incompared to middle school.

Each of themAll of us would have a notebook that wase used to write down some new songs.

I remember there was a movie back then called "A Sweet Career" and the movie had the theme music called "Our Lives are Full of Sunshine", which was a littlepretty popular.

So I learned to sing it and after a while ofsome practice I could pull it off.