hold up I couldn't believe that the first paper I writed in college was so t

这是个句子么？前面没有hold up吧～
还有，write的过去分词是written,college是个可数名词，前面要加a 或the。

I couldn't believe that the first paper I wrote in the college was so terrible.

of course it's wrong.the p.p. form of "writed" should be corrected as "written".