2.Complete the text with the future continuous or future perfect form of the verbs in brackets. Our world in the future, by Jelal Tahrani.

Six billion people live in the world today, but two hundred years from now, that number 1 (grow) to twenty or thirty billion! So where will we all live? Many people 2 (live) in huge cities with populations of thirty or fifty million people. By then, some people 3 (build) houses on − or under − the water too. By the year 2200, we 4 (not eat) the same foods as we eat today, and we 5 (probably / speak) different languages too. Two hundred years from now, the world will be a very different place!