缺词填空(10分)

There was once an old man who had four sons. He wanted his sons to learn not to judge（判断）things too q. So he sent them, in turn, to go and look at a pear tree far away.
The first son went in the winter, the second in the spring, the third in the summer, and the youngest son in the f.
When the sons had all gone and come back, the old man called them together and asked them to dwhat they had seen.
The first son said that the tree was ugly and bald, but the second son said no---the tree was covered wgreen buds (花蕾).
The third son shook his head and said that the tree was fof flowers, and smelled so sweet, looked so
beautiful that he thought it was the most wonderful thing he had eseen.
The youngest son didn’t a with all his brothers. He said that there were
so many fruits on it.
The old man then eto his son that they were all right, bthey had each seen only one season in the tree’s life. He told them not to judge a life by one difficult season.
If you give up when it’s winter, you will miss the hope of your spring, the bof your summer, and the harvest (丰收) of your autumn.