I. Choose the correct answer to complete the sentence 1. I think that he people ______ live in cities under the sea in the future. A. will B. should C. must D. have to 2. Astronauts lives are very different on a ______. A. Floating B. space station C. spacesuit D. the earth 3. If I have time, I ______ go to the opera house. A. Have B. has C. will have D. having 4. What can we do there? ______ A. We can go hiking there B. It takes us 2 hours to go there C. We can go there by bus D. We can go to the Green Mountain 5. Where are you going on holiday? ______ A. Im going to visit Tokyo Tower B. I sometimes go to the library C. Yes, of course D. Im going with my mother