английский язык. помогите раскрыть скобки. (pr. perfect; pr. continuous; pr. simple; past simple) /////

nina has just finished work
во втором все можно поставить, зависит от ситуации (кроме перфекта)
Did you see Jack today?
Have you heard the new symph. by M? Yes. When did you hear it? I heard it last sunday

What are you doing here at such a late hour? You didnt write ur comp. No I have written it already I'm working at my report and when did you write your comp? I finished it two days ago

вроде так.

1 Nina has just finished her work.
2 Have you read "Ivanhole"?
3 Have you seen Jack today?/Did you see Jack today?
4 Have you heard the new symphony by M.?--Yes, I have. When did you hear it?-I heard it last Sunday.
5What are you doing here at such a late hour? Are you writing a composition?--No,I have written it already.I am working at my report. And when did you write your composition?-I finished it two days ago.

1) nina has just finished her work
2) Have you read "ivanhole" ?
3) Did you see Jack today?
4) Have you heard the new symphony by M.? -Yes, I have. -When did you hear it? - I heard it last sunday.
5) What are you doing here at such a late hour? Are you writing your composition? - No,I have wrote it already.I am working at my report. -And when did you write your composition? -I finished it two days ago.
В предложении №3 у меня правильно 100%. Nadya F. написала возможность двух вариантов, но это не так. Когда указано когда было сделано действие (today - сегодня) , тогда используем Past Simple!