past simple

• was/were happening = was/were + ing form
• She was working in a factory when she was 14 years old. (work)
• we were watching a film. (watch)
• He was playing football with his friends. (play)
• I was reading the newspaper this morning. (read)
• We were listening to music all day long. (listen)
• The children were sleeping when we arrived. (sleep)
• My sister was studying hard for her final exams. (study)
• They were eating pizza at lunchtime. (eat)
• We were waiting for our train to arrive. (wait)