Verified answer

1. Общий вопрос

Was I watching TV at 7 o'clock yesterday?

2. Разделительный вопрос

I was watching TV at 7 o'clock yesterday, wasn’t I?

3. Специальный вопрос

What was I doing at 7 o'clock yesterday?

4. Вопрос к подлежащему

Who was watching TV at 7 o'clock yesterday?

5. Альтернативный вопрос

Was I watching TV or listening to the radio at 7 o'clock yesterday?