Какие можно составить 8 вопросов к предложению my father was very busy at the office yesterday

My father was very busy at the office yesterday. - Вчера мой отец был очень занят в офисе. 1. Was my father very busy at the office yesterday? 2. Who was very busy at the office yesterday? 3. Where was my father very busy yesterday? 4. When was my father very busy at the office? 5. Was my father or mother very busy at the office yesterday? 6. Was my father very busy at the office or at home yesterday? 7. Was my father very busy at the office yesterday or last Saturday? 8. My father was very busy at the office yesterday, wasn\'t he?