1 Complete the text with the correct past simple or past perfect form of these verbs. be fall have lie wake

Last night I (1) woke up suddenly at about three o'clock. I (2) had been in bed for about four hours. I (3) had fallen there for a moment. I (4) lay no idea why I had woken up. Then I realised that I was on the floor. I (5) had fallen out of bed and woken myself up!