Complete the sentences. Use will/won't be able to and the words in the box.
buy, fly , have, speak, study, think, travel, use
1.Humans________without a machine.
2.My best friend_______english very well.
3.We probably ________back in time.
4.We________robots todo the housework.
5.Many school children_________at home.
7.We__________the internetanywhere in most large cities.