The key to exercise solutions in chapter 5.2 - Grammar for the textbook Focus 3 - Student's Book with authors Daniel Brayshaw, Vaughan Jones, Bartosz Michałowski and Sue Kay from Pearson Education
Question
In pairs, guess the answers to the questions. Then read the text and check your ideas.
Answer
1.65 billion, 7 billion, 9.2 billion
More people live in cities than in the countryside.