Here are the completed sentences using the verbs and gerunds/nouns from the box:

1. I enjoy bringing lunch to the beach, but I never litter.
2. If people **don’t mind fishing** in the river, we won't be able to go fishing there.
3. **Consider keeping** off the path. You can find cool places for photos, but you have to be very careful not to damage anything.
4. I **hate feeding** animals. Why would people want to harm them?
5. Do you think we should **stop hunting** the wildlife? Some people think it’s cute, but it’s actually bad for the animals' health.
6. The government should **consider building** something around the national park to keep hunters out.