3 BUILD YOUR VOCABULARY Look at the words in blue in the text. Which two words are verbs? Use the words to complete the sentences. 1 Sharks don't often — humans. 2 There are 6,000 wild tigers in the world. 3 Some people are trying to — endangered animals. 4 There are more people who die in — with chairs than with animals. 5 Human are changing the climate. 6 There is a lot of __ in big cities.
