Usage Examples Past Simple vs. Past Continuous

• Why was Lucy smoking at the party? -
• Bob was waiting for me for two hours yesterday. -
• I was watching television when my mother came home. -
• Which song were you singing when I came in? -
• I was standing in the line when I saw Mary. -
• Were they studying at this time yesterday? -
• My wife arrived when I was having a bath. -
• I went to Tokyo last month. -
• While I was walking to the university, I witnessed an accident. -
• We were playing tennis when Alex hurt his wrist. -
• Someone took a picture of Tom while he was sitting on a bench. -
• Which shop did Tom go yesterday? -
• What were they doing when you arrived at the party? -
• The town was changing quickly. -
• Were you sleeping when everything happened? -
• I was reading when the doorbell rang. -
• We found the keys we were looking for yesterday. -
• Lisa was studying when Joe called her. -
• Paula was running when the storm started. -
• I was studying at the library all day yesterday. -