Grandpa Li is more than seventy years old, and he doesn't have any son or daughter. He wanted to invite some old people to his house for dinner, but no one can help him. Mingming took his classmates to Grandpa Li's house when he knows it. They helped Grandpa Li make the bed, do the dishes, sweep the floor, take out the trash and so on. Grandpa Li was very thankful. He asked Mingming and his classmates have supper with them. But they thanked him and then left.
李爷爷已经70多岁了，他没有儿子和女儿。他想请一些老人到他家吃饭，但没人能帮他。明明知道后就带同学去李爷爷家。他们帮李爷爷铺床、洗碗、扫地、倒垃圾等。李爷爷非常感激。他让明明和他的同学一起吃晚饭。但他们谢了他就走了。