1. 根据旬意，从方框中选择恰当的单词填空，有的需要变换形式。每词限用一次。

side, during, apartment, plant, environment

1. （1） They work  the night and sleep by day.
3. （2） There are many trees on bothof the road.
5. （3）  need light and water.
7. （4） The factory didn't provide（提供) a goodfor its workers.
9. （5） They have six holidayfor sale.