Soon, the river became dirtier and dirtier. The river has turned green, and there are rubbish floating in the river, including watermelon skin, coke bottles and garbage bags. Before long, mother fish fell ill and died. Duoduo is very sad and feels lonely. He thought, how can I make this river as clean as before?
One day, a little girl saw a lonely little fish. The little girl said, "hey, fish, what's your name?" Why are you the only one swimming in the river? " Duoduo said, "My name is Duoduo, because the river is dirty, and my mother died after drinking dirty water, leaving me alone." The little girl said, "Then I'll take you to my house, and you won't be lonely." Duo Duo said, "No, I want to protect my home. I can't make it dirty again." The little girl said, "Then let me help you." Say more: "Thank you!" The little girl said, "You're welcome, it's what I should do." When she got home, she called her little friend and rowed the boat to pick up the garbage on the river. When adults saw it, they thought that the children had done a good job, so they all rowed boats to pick up garbage on the river. Soon, the river became clean again, and people stopped throwing garbage into it.
A lot of friends swam to the little girl's door and said, "Hello, sister, thank you and your friends, so that we can swim happily in the river again!" " The little girl said, "You're welcome, but we shouldn't litter." "Dodo said," Sister, invite you and your friends to swim in the river. Let's play together! "The little girl said," Good! " The little girl telephoned her little friend. They jumped into the water one by one, and many small fish swam happily in the river. They became very good friends.