He was playing computer games from two till three yesterday
1. Was he playing computer games from two till three yesterday? - общий
2. Was he or were they playing computer games from two till three yesterday? - альтернативн.
3. He was playing computer games from two till three yesterday, wasn't he? - разделительн.
4. Who was playing computer games from two till three yesterday? - к подлежащему
5. What was he doing from two till three yesterday? - специальный