完成句子

1.The research is so designed that____ ____ (一旦开始) nothing can be done to change it.

2. Nobody was surprised when Nancy's boyfriend broke up with her

  since she___  him____ dirt( 把他当下等人对待) ．

3. Life  ____  him   ____(注定)working 12 hours a day.

4. The books in the library _____ ____    (分类)by subject.

5. The house on the hill  ___   (俯视)the village.