1) I knew there (had been) an earthquake but I didn’t realise how bad until I
(saw) the news on TV.
2) She (was sleeping) when she (heard) a strange noise.
3)
I (woke up) late and the house was empty. Mum (had already gone) to work.
4) He (saw) his aunt last week. He (had not seen) her for two years.
5) When
Uncle Dave’s train (arrived) at the station, everyone (was waiting) there for
him.