II. Supply the correct form of the words in brackets.
1. All mail _________________were suspended during the strike. (deliver)
2. White walls can give a feeling of _________________. (space)
3. Many people don’t realize that they are breathing _________________air. (pollute)
4. The health of our children are being _________________by exhaust fumes. (endanger)
5. The team has thousands of _________________ supporters. (energy)
6. Pollution is just one of the _________________ of living in the town. (advantage)