Ⅰ. 根据句意及首字母或汉语提示完成单词
1. We should try to s________ water in daily life.
2. The man w________ over 100 kilos, so he needs to lose weight.
3. Lots of fish in the river died because of the p________ water.
4. The________ (笼子) is too small for the two birds to live in.
5. Parents should ________ (教育) their children to care for the animals.
