“Yes,” own hands. 49 , we can 50 the world a better place. answered all of us. To our surprise, he put enough sand into the jar. And then he told us 29 38.

One day, our teacher brought an empty jar to class. Without 26 a word, he filled the waste things! We may have a sense of achievement if we can fix broken things 48 our jar 27 rocks. 28 , he put pebbles into the jar. He asked us, “Is the jar full?”