Present perfect, past simple, and past continuous tenses gap-fill exercise 1

Pete: 'Have you ever (break) a bone?'

Sandy: 'Yes, I , actually. I (break) my arm when I at secondary school.'

Pete: 'How you do it?'

Sandy: 'Well, we (get) off the school bus one morning and the girl behind me
(push) me and I (fall) down the steps.

Pete: 'Oh no. it very painful?'

Sandy: 'I can't really remember - it such a long time ago. I expect it .