Decide if you need to use while or when to complete the following seanteces_____my cousin was calling 911 my foot was hurting and i was shaking?

Decide if you need to use while or when to complete the following seanteces _____my cousin was calling 911 my foot was hurting and i was shaking. Mike's parents were talking to the paramedic_____i arrived I was reading some Calvin and Hobbes comics_____i was waitingfor the medical appointment. I was going up the mountain_____I fell and second rock.