ild your vocabulary 5 Complete the dialogues with the words in the box. save accidents pollution actions approximately attack Do brown bears Not usually people? attack 1 How many tigers are there in India? 1,500, 2 Is the air clean in your city? No, there's a lot of 3 Is it important to. whales? Yes. Some types of whales are becoming extinct. 4 How many people have car, every year? Quite a lot, I think. 5 Do people need to change their. towards animals? Yes, definitely​