It was last Sunday evening.Tina was taking her dog for a walk.The dog's name is Jacky.When they were walking,they saw some children playing on the bridge.Suddenly,a boy fell in the river.He couldn't swim and cried for help.Tina and Jacky ran to the river quickly.Tina jumped into the water to save the boy.Jacky jumped into the water,too,and helped them out.The boy was saved.