расскройте скобкибупатребляя глю в Present Perfect, Present Continuous , Present Simple или Past Simple : What you (to do) here at such a late hour? You (to write your composition? - No, I (to write it already Пожалуста С Р О Ч Н О !!
What are you doing here at such a late hour? Are you writing your composition? - No, I have writen it already.