KOREAN Sentences!

I'm having my vacation these days , so it gave me the chance to have few hours to study korean again...
yeepehhh......:)

I constructed some simple English sentences, then translated it to Korean. Unfortunately, I'm sure that there are a lot of error in those sentences.....
please help me correct the errors i made..
i would really appreciate if anyone can help me..^^

1. I study Korean language although i am busy.
한곡어를 공부하지만 빠바요.
>> 빠쁘지만 난 한국어를 공부한다.

2.I went to college today.
오늘 대학교에<strike>서</strike> <strike>왔</strike>갔어요.

3. I wrote a letter yesterday.
<strike>언</strike>어제 편지를 <strike>씄</strike>썼어요.

4. Throw the garbage away.
쓰레기를 버리십시오.

5. This feeling is strange ,but i like it.
이 기분이 이상해요.하지만 <strike>내가</strike>나는 (그것을)좋아해요. (^^;;;;;;;)
>> 이런 느낌은 이상하지만 난 그것을 좋아해요.


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