Пожалуйста помогите. Past Simple or Past Continuous.
a. We met/were meeting when we lived/were living in Spain?
b. Why didn't you visit/weren't you visiting me while you stayed/were staying in Astana?
c. What did you do/were you doing when I phoned/were phoning you?
d. I saw/was seeing him in the park he sat/was sitting on the bench.
e. He slept/was sleeping in the garden when we arrived/were arriving.