1 my brother and I have learnt how to swim in 2010
                          A            B              C         D
--> D      in --> since
2 He is intersing in make car samples
          A                   B   C                  D
--> A      interesting --> interested
3 My mother can play the piano when she was four
                          A              B                 C      D
--> A       can --> could
4 I will go out If I will finish my homework
              A          B        C                     D
--> B        Bỏ: will
5 He can swim when he was five years old
             A      B        C                                D
--> A        can--> could
6 She has lived in this city from1999
      A                     B       C         D
--> D         from --> since
7 People many to become an astist someday
        A                         B           C                   D
--> A         People many --> Many people
8 They often go to holiday in the summer
                 A          B                 C   D
--> B         to holiday --> on holiday