Yesterday,my mother and I went to see my grandma in our family car,Ten minutes later,we met a traffic lights.We had to stop there to wait.Suddenly,there was a young man .He came to our car.Then,he stood there beside the car and began to clean it.My mother wanted to stop him.But he went on cleaning.Then,he finished.He asked 5 Yuan for his work.We had no way out.We gave him 3 Yuan.Then,he left.It was an interesting experience.