What I am doing now

I'm a student in the English language department.
I have finished level one but my language skills are still lower than I expected
I am on summer vacation now ..

All I am doing is reading books and improving my English language.
Also I have started learning the Korean language , just for fun :)
Unfortunately, I have acquired one bad habit. I have started staying up until the sun rises. ><

start/begin/continue/stop + ing

I have started learning Korean.

I began learning English five years ago.

Please stop singing so loud!  I am studying.

Do you really continue studying until the sun rises?

Reformulation

Hello, I'm a student of English. I finished level one, but my language skills are still lower than I expected. Now, I'm on summer vacation. All I do is read books and try to improve my English. I also started learning Korean, just for fun :-) However, I have acquired one bad habit from studying so much, now I don't go to bed until sunrise.

However = Laakin

Note** When you complete a thought, use a period [.]

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