Fill in the gaps with one of the verbs from the list in the past perfect or the past perfect continuous.
• burgle • steal • read • wait • not/catch • work
1 Amy was sad because somebody had stolen her favourite necklace.
2 The detective looked tired because he ... on the case all night.
3 Lucy was worried because the police ... the criminal yet.
4 They were upset because somebody ... their house.
5 The accused was worried because he ... for the jury to reach a verdict for over an hour.
6 The police officer was tired because he ... case files all morning.