1. if Phong had enough money, he could travel abroad
2. if I drove too close to the animals on safari, they would get scared
3. if Tom had a passport, he could travel abroad
4. if there weren't so many tourists visiting the national parks, the enviroment there wouldn't be badly damaged
5. If tourists didn't throw litter in the river, the water wouldn't be polluted
6. If I could swim, I would be going scuba-driving with you
7. if I had any holiday, I’d go on an eco - tour to Phu Quoc National Park
8. If these students worked hard, they could pass the final exam.