IV. Write sentences. Use the future continuous, future perfect simple or future perfect continuous. What will life be like in fifty years’ time? ~ we / use / energy that doesn’t harm the environment …We’ll be using energy that doesn’t harm the environment… 31. scientists / discover / life on other planets 32. the Earth’s climate / become / much hotter than it is today 33. we / not use / fossil fuels like coal and oil 34. doctors / not find / a cure for the common cold 35. people / live / on the moon for several years / by then 36. the Internet / replace / television / as our main source of entertainment