Early one morning, Mark and Steve were going to cycle on their bikes. They were going to the park. Before they left, Steve put his helmet on. Then the boys started to cycle.

They were having a great time. But, unexpectedly, a dog and a cat dashed in front of them. The boys lost their balance and fell off their bikes!

Mark was badly injured because he had hit his head against a sharp rock. Steve asked people who were at the park to help him. His friend was taken to the hospital in an ambulance.

His family and Steve went to visit him everyday. After a few days Mark was feeling better. Steve told him that he should always wear a helmet before going cycling.

The bike ride