作业精灵老师示例：
It is Children's Day this Sunday. The children are going to have a party at
Mike's house.The party begins on Sunday morning.
Su Hai is going to buy some snacks and drinks. Wang Bing is going to bring
some fruit from home. Yang Ling is going to bring some toys and play with her
friends at the party.Liu Tao is going to buy some balloons.
They are going to play some party games and have a lot of fun！
