阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。
Mr. Watson lived with his family in the woods. He owned ______ farm, which looked almost _____ (desert). _____ (fortune), he also had a cow producing milk every day. He sold or exchanged some of the milk in the towns nearby ______ other food and made cheese and butter for the family with what _____ (leave). The cow was their only means of support, in fact. One day, the cow was eating grass ______it began to rain heavily. While making great efforts to run away, she fell over the hill and died. Then the Watsons had to make a living______ the cow. In order to support his family, Mr. Watson began to plant herbs and vegetables. Since the plants took a while to grow, he started cutting down trees _____ (sell) the wood. Thinking about his children’s clothes, he started growing cotton too. When harvest came around, he was already selling herbs, vegetables and cotton in the market _____ people from the towns met regularly. Now it occurred to_____ that his farm had much potential and that the death of the cow was a bit of luck.