Нужно составить вопросы к предложению: she was writing an interesting letter yesterday at 5 p.m. типы вопросов: общий, специальные, альтернативный, разделительный, с предлогом who.

1) Was she writing an interesting letter yesterday at 5 p.m ?
2)Who was writing an interesting letter yesterday at 5 p.m?
3) Was she writing an interesting letter yesterday at 5 p.m or 6 p.m ?
4) She was writing an interesting letter yesterday at 5 p.m, isn't she?
точно в не уверена, как знаю так и написала)