слюда One sunny Sunday morning Mark and Bill went to the beach.They wanted to surf.There was golden sand on the beach.The friends saw a sign "No Swimming-Sharks" on the beach.But they ignored it and started surfing.Suddenly a big shark appeared.The boys began to yell:"Shark!Help us!"But nobody heard them.Bill proposed Mark to jump onto his board.He got onto the board and began to paddle towards the beach.They pushed Mark's board towards the shark.The shark was angry and broke other board into pieces.Friends saved their lives.They were lucky and happy to be alive!