21. A hi-tech robot will help us                             children while we are away.       A. look out                  B. look at                     C. look after                D. look in 22. We might have robots_____ our meals.       A. cook                       B. to cook                    C. cooking                   D. to cooking 23. I might have a smart phone ………………..  the Internet.       A. surf                         B. to surf                     C. surfing                    D. to surfing 24. We also watch films ______smart phones.       A. in                            B. at                             C. on                           D. to 25. "Do you think we will________ holiday to the Moon?"       A. go                           B. go on                      C. go on the                 D. go for 26. "Do you think that our houses will be___ space?"       A. in                            B. on                          C. at                             D. to 27. Our future houses will use______ energy, and they are very friendly to the environment.       A. sun                          B. sunny                      C. solar                        D. lunar 28. We will have more robots_____ they can help us do housework and protect our houses.       A. so                            B. because                   C. so that                     D. although 29. A super smart TV will help us…………        goods from the supermarket.       A. take                         B. buy                         C. carry                       D. order 30. We will have a robot in the garden____ the flowers and ____the dogs and cats.       A. cut-take                   B. water - feed             C. feed - take               D. water - to wash