1.Adam [did/was doing] his homework when Simon [called/was calling] 2.We [slept/were sleeping] when the postman [rang/was ranging] the doorbell. 3.[Were they finding/Did they fing] the pharmacy before it [closed/was closing] 4.Chloe and Kyle [danced/were dancing] together when the music [stopped/was stopping] 5.[Did Shelly wait/Was Shelly waiting] at the station when the train [crashed/was crashing]