1. While the secretary was typing the documents (papers), I was talking to the chief engineer. (Past Continuous)2. What were you doing from 8 to 10 on Monday? - I was studying for my exams. (Past Continuous)3. You were busy yesterday, weren\'t you? - Yes, I was writing an article. - What a pity! There was a very interesting lecture at the University yesterday. (Past Simple/Past Continuous/Past Simple)4. Who were you talking to when I met you? - My cousin. (Past Continuous)5. We were all at home last night. I was reading the whole evening. My wife was watching TV and my children were playing chess. (Past Simple/Past Continuous)6. What were you discussing in yesterday\'s meeting? - We were talking about our plan. (Past Continuous)7. Who helped you do your homework? - I did it myself. (Past Simple)