We __________ protect the habitats of tigers if we want them to survive. It is necessary for their survival.
have to
In many national parks, visitors __________ stay on the marked paths. It is a strict rule to protect the plants.
have to
You __________ pay a lot of money to help animals; even small lifestyle changes can make a difference.
don't have to
Governments __________ create more protected areas for endangered species. It's the right thing to do!
should
People __________ buy products made from ivory or rhino horns. It's wrong and often illegal.
shoudn't
Zoos __________ keep animals in small cages; they need space to move and feel natural.
shouldn't
Fortunately, you __________ be a scientist to help; anyone can volunteer for local nature groups.
don't have to
Correct a mistake: To save the sea turtles, we should to stop throwing plastic in the ocean.
To save the sea turtles, we have to stop throwing plastic in the ocean.
Correct a mistake: Does he has to work at the animal rescue center every weekend?
Does he have to work at the animal rescue center every weekend?
Correct a mistake: You shouldn't to touch the animals in the wild; it can be dangerous for them and you.
You shouldn't touch the animals in the wild; it can be dangerous for them and you.
Correct mistake: We don't have to kill bees because they are very important for our food.
We shouldn't kill bees because they are very important for our food.
If you want to learn more, you __________ join the free guided tour at 10:00 AM. It’s not mandatory, but it’s very interesting!
should
You can take photos, but you __________ use a flash. The bright light scares the nocturnal animals.
shouldn't
You __________ pay for a ticket at the gate, or the guards won't let you enter.
have to
