Complete the sentences with can, can’t, could, couldn’t, will be able to or won’t be able to. 1. _______ robots in the past help astronauts on board the space station? 2. Robots of the future ______________ cook our food. 3. There are some things that robots ________ do but people can. 4. In 20 or 30 years, some robots ______________ talk like a human. 5. When he was young, he ______________ speak English at all. 6. I’m really sorry. I _______________ attend your birthday party tonight. 7. My brother ______________ start school until next year. 8. Some years ago, robots __________ clean the house, but now they can.