1. This morning when the alarm clock went off, I was having a sweet dream. 2. Carol met her husband while she was traveling in Europe. 3. I was working on my computer when there was a sudden power cut and all my data was lost. 4. When we shared a room two years ago, Lin always took my things without asking. 5. When Tom called yesterday, I was doing the washing-up in the kitchen, so I didn't hear the phone. 6. Frank was constantly asking for money last year when he was still out of work. 7. Mark requested complete silence when he was composing music. 8. In 1417, Nguyen Trai joined the army of Le Loi, who was then leading the resistance movement in the mountainous regions.