I (to do) the washing up when my parents (to return) home When i (to meet) Jane, she (to eat) ice-cream We (to work)

I was doing the washing up, when my parents returned home. When I met Jane, she was eating ice-cream. We were working in the garden, when it started to rain. While Jack was looking for his report, somebody knocked the door. When I opened the door of the classroom, the students were writing a dictation.