5 Use the collocations from Exercise 4 in the correct forms to complete the sentences. I think population growth is a major problem. How can we grow food for so many people? 1 If this experiment help millions of people have healthier lives. 2 I wonder what amazing will see in the next 50 years. , we can 3 James hates using he says the buses and trams are too unreliable. we because 4 Edita likes living in the city centre because she doesn't have to 5 We need to use renewable energy like solar and wind power because will not last forever.