阅读下面短文，根据所给情节进行续写，使之构成一个完整的故事。 The sea’s surprise Jim and Andy walked along the beach, looking for an adventure.They joked that some day they would find a talking fish or a mermaid or a bottle with a treasure map inside.So far they had only found shells and rocks and seaweed.Today though was different.The boys __felt__excited. Sea crabs scampered on the rocks.Up one side and down the other.They were quick and lively.The tide didn’t seem to ever wash them away.Then Jim saw a fish.It was stranded on the beach, just flopping around.