Practice: Combine Sentences with when / while

Combine each pair of sentences using when or while and the past progressive (was/were + –ing). Write your combined sentence below each pair.

1. I browsed the clothes. My phone rang.
2. She tried on a dress. The salesperson asked if she needed help.
3. We waited in line. Someone tried to cut in front of us.
4. He paid for his items. His credit card was declined.
5. They walked through the electronics section. They heard a store announcement.
6. I left the store. I suddenly saw an old friend.
7. She unpacked the groceries. She realized she had forgotten the milk.
8. He compared prices for a new TV. The store announced it was closing.
9. We walked through the mall. A colorful display in a window caught our eye.
10. She talked to her friend about a purchase. She accidentally knocked over a display.
11. I pushed my shopping cart. One of the wheels suddenly got stuck.
12. They looked for the last box of cereal. Another customer grabbed it.