1. They were cleaning (clean) the windows when it started (start) to rain.Cleaning the windows was the longer action.2. As he (drive) to work, he (remember) that his briefcase was still at home.3. Melanie (cook) dinner when her husband (come) home.4. I (hear) a loud crash as I (sit) in the garden.5. She (type) a letter when her boss (arrive).6. While the dog (dig) in the garden, it (find) a bone.7. Mary (ride) her bicycle when she (notice) the tiny kitten.8. While I (do) my homework, the phone (ring).