7．Mr．Johnson lived in the woods with his wife and children．He owned（41）a farm，which looked almost abandoned．（42）Luckily （lucky），he also had a cow which produced milk every day．He sold or exchanged some of the milk in the towns nearly （43）for other food and made cheese and butter for the family with what （44）was left （leave）．The cow was their only means of support，in fact．One day，the cow was eating grass （45）when it began to rain heavily．While making great efforts to run away，she （46）fell （fall） over the hill and died．Then the Johnson tried to make a living（47）without the cow．In order to support his family，Mr．Johnson began to plant herbs and vegetables．Since the plants took a while to grow，he started cutting down trees（48）to sell （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 （49）where people from the town met regularly．Now it occurred to （50）him that his farm had much potential and that the death of the cow was a bit of luck．
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