We were packing our bags ____ they arrived at the airport. ____ the fire alarm sounded, everyone immediately left the building. He fell and broke his arm ____ he was skiing down the mountain. I was talking on the phone, ____ the doorbell rang. The hikers were making their way through the forest ____ they suddenly saw a bear. ____ I was having a picnic in the park, it started to rain heavily. I lost my keys ____ I was waiting for a taxi this morning. We were watching a movie ____ the children were playing quietly upstairs. The phone rang ____ I opened the front door. I was just about to finish my homework ____ my mom told me to go eat dinner.

When or While

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