1) ....my friend was listening our conversation. 2).....we were waiting for friend. 3).........he was cooking a dinner. 4) ......my mother was cleaning the room. 5).......I was sweeping. 6) ......Mary was doing her homework? 7) .......He was drawing. 8)..........John was talking to the teacher. 9)..........I was reading a book. 10) Grown-ups were drinking coffee.