ex 2. Find and correct the mistake.(sửa lỗi sai)

      1.   Everyday I go to work by foot, but she goes to work by bus.                  .................

                                       A            B                           C              D

      2.   I think more people will be using public transportation in the future.     .................

                 A      B                          C                                                   D

      3.   I’m in a bus to Binh Dinh to join in a meeting there.                               .................

                        A      B                  C                                D

      4.   My brother will pedal his monowheel to work at this time next week.   .................

                                      A         B                          C               D

      5.   Will we traveling in driverless and high-speed cars in the future?          .................

                                A                  B                    C                 D