先阅读下面短文，再从后面各小题所给的A、B、C三个选项中选择可以填入文中相应空缺处的最佳选项。

    Simon is a farmer. He lives and works on his parents' farm. 1 when he was a child, he didn't want to be on the farm. Life was too    2 there. He wanted to live    3 a big city.

    When Simon was 18, hewent to college(上大学) in London. He    4 his life there. After hegraduated(毕业), he didn't go back to the 5. He worked for some years in the city and became 6successful businessman(成功的商人).

    For some years he was7 but then things began to change (改变). He felt sad but he didn't 8why.

    And then one day when he had breakfast, he    9a bird singing outside his window and he knew he    10be really happy away from the farm.