1. I met / was meeting the professor while I did / was doing the shopping. 2. I looked / was looking through the magazines when I heard / was hearing

1. I met / was meeting the professor while I did / was doing the shopping. 2. I looked / was looking through the magazines when I heard / was hearingsomeone call my name. 3. When I saw / was seeing him he wore / was wearing the same old black hat. 4. We decided / were deciding to have a cup of tea together. 5. When I finished / was finishing typing my article I went / was going home.