=>
VIII/
1. I am afraid that the air pollution in our city is getting worse and worse.
2. We can use the Internet as an effective way for self-study.
3. We shouldn’t swim in this river because its water is highly polluted.
4. In the city there was so much traffic and noise and there was no time to relax.
5. I will miss the train unless I leave now.
IX/
1. Have -> has
2. Makes -> does
