30．People will use robots _________ the housework in the future．

A．do                       B．to do                   C．doing                     D．to doing

29．I _________ her carefully，but I _________ nothing．

A．listen，hear           B．listen to，hear       C．hear，listen            D．hear，listen to

28．She doesn't like _________．

A．something sweet     B．sweet something     C．anything sweet        D．sweet anything

27．Why don't you _________ there?

A．hiking                   B．go hiking             C．going hiking           D．to go hiking

26．They are going to visit the factory _________ next Sunday．

A．in                       B．on                       C．at                          D．／

25．He _________ have a field trip the day after tomorrow．

A．is                        B．does                    C．is going                 D．is going to

24．There is going to _________ a film at the cinema this evening．

A．be                       B．have                    C．being                     D．having

23．Do you like _________ fishing?

A．go                       B．are going             C．going                     D．goes

22．Red _________ good luck．

A．thinks                  B．means                  C．looks                     D．hears

21．They are decorating the Christmas tree _________ some flowers．

A．on                       B．in                        C．with                             D．at