1. When i opened the door, she was talking on her phone.
2. Tom was riding when he fell down.
3. Dr Q was working in the garden when he saw the mouse.
4. They were using the blender when it stopped working.
5. I was sleeping in my bed when i heard a noise.
6. When the teacher walked into the classroom the children were running around.
7. I was playing football when my mom called.
8. When my friends arrived i was having dinner with my family.
9. My dad was sitting on the balcony when something strange happend.
10. Liz was hanging out with her friends when she lost her wallet.