DON'T BE SELFISH A mother is admonishing her son. ----Now, John, don't be selfish. Let you. little brother share the bicycle with you. ----But Mother, I do. I ride it down the hill, and he rides it up the hill.一位母亲在劝告她的儿子。 "听着，约翰，别太自私，让你的弟弟和你共用一辆自行车。" "妈妈，我是让他。我先骑下坡，他再骑上坡。"
