I heard my friend (to sing) in the bathroom. It was funny! I saw children (to throw) a big stone into the sea. They did it and ran away. I felt the ground, (to shake) for nearly a minute. It was rather scary! The hero saw a gangster (to shoot) a poor girl. The girl fell on the ground. We noticed George (to steal) the class register. Luckily, we managed to stop him.