If he hadn't reported his discovery to the police he'd get to keep the treasure.
If Mark didn't do bad at school , he wouldn't have private lesson.
Chris would go to the museum with his school, if he wasn't ill.
If Lucia went to Egipt , she would have a chance to see the Piramids.
If Cousteau hadn't invented a small submersble , it wouldn't be possible for ......
If Carla's father wasn't keen on history and told her storyes about ancient civilisations, she wouldn't be a historian
