1. They ____ when I arrived. had seen had known had finished
2. I ____ this equipment before, but only on TV. had finished had not expected had seen
3. I ____ that safety video at my last job. had looked had watched had had
4. We ____ a lot of rain at the work site today. had had had have have have
5. They ____ any rain at the site down the road. had left had not had had had
Unit 26