Mr．Smith used to be in prison for three years，which may have you think he is not a good man．But （13） ______ a matter of fact，he is kind-hearted as well as honest．The reason（14） ______ he was put into prison was not that he himself broke the law，（15） ______ that his six-year-old son blew up（炸毁）the bridge near his home，imitating what he had seen on TV． （16） ______ this little boy did break the law，he was too young to be put into prison．According （17） ______ the local law，the boy's parents had to be punished．As a result，Mr．Smith received the punishment．He was arrested and taken to the police station finally．Most of the people in the town showed pity on him，but it was useless．After all，law is law．Everybody is to obey （18） ______ ．As the proverb of"When it rains，it pours"，Mrs．Smith was out of work before long．She had to move to （19） ______ southern state，where she was born and grew up．Misfortunes tell us what fortune is． （20） ______ the Smiths have experienced does teach us a good lesson．