1 Did I play computer games at 5 o'clock yesterday?2 Was he playing computer games from two till three yesterday?3 When we were playing football, I suddenly broke my leg, didn't I?4 What was mother sewing when our plumber knocked the door?5 When did I write three novels?6 When will I see a lion at the zoo?7 What were we playing the whole evening yesterday?8 What was Nick doing when you came to his office?