Usage Examples Past Simple vs. Past Continuous

• Was your grandmother working when she met your grandfather? -
• We were playing tennis when Alex hurt his wrist. -
• While I was walking to the university, I witnessed an accident. -
• What were you doing at eight o'clock last night? -
• Who was Alessia talking to when you saw her? -
• You weren't dancing at noon yesterday. -
• My mother was cooking for five hours on Sunday. -
• I was standing in the line when I saw Mary. -
• Emma called me when I was sitting on the train. -
• I was watching television when my mother came home. -
• Were they smiling when they saw you? -
• When I walked into the room, they were dancing. -
• We found the keys we were looking for yesterday. -
• My wife arrived when I was having a bath. -
• What were they doing when you arrived at the party? -
• Who did you see at the train station? -
• Which song were you singing when I came in? -
• Anna was sleeping when the burglars broke into her house. -
• I broke my leg when I was skiing. -
• Why was Lucy smoking at the party? -