Complete the sentences. use will or the future perfect of the verbs in the box. disappear experience improve land move need rise 0 global have at least 1 °c by the end of this century. 1 many of us extreme weather events, such as storms, heat waves and floods. 2 the world more energy in the future. 3 they say that the treatment of cancer by 2025. 4 experts predict that half of today’s languages 2100. 5 more and more people the countryside to cities in this century. 6 they say that people mars by 2040

1 Many of us will experience more extreme weather events, such as storms, heat waves and floods.
2 The world will need much more energy in the future.
3 They say that the treatment of cancer will have improved enormously by 2025.
4 Experts predict that half of today’s languages will have disappeared by 2100.
5 More and more people will move from the countryside to cities in this century.
6 They say that people will have landed on Mars by 2040.