1. A: I’d like h̲e̲l̲p̲i̲n̲g̲ homeless people.
B: You can v̲o̲l̲u̲n̲t̲e̲e̲r̲ at the homeless charity.
2. A: I’m eager t̲o̲ ̲r̲e̲d̲u̲c̲e̲ household waste.
B: You could try r̲e̲c̲y̲c̲l̲i̲n̲g̲ your plastic bottles.
3. A: People have to stop d̲r̲o̲p̲p̲i̲n̲g̲ litter in the park.
B: I suggest t̲o̲ ̲o̲r̲g̲a̲n̲i̲s̲e̲ a clean-up day.
4. A: I expect people t̲o̲ ̲d̲o̲ more to protect the environment.
B: Yes. Everyone should consider j̲o̲i̲n̲i̲n̲g̲ an environmental group.