mary's hobby is singing . she enjoys (1)                  very much. when her brother (2)                      a karaoke set last month , mary was so glad that she sang every day after dinner.she likes to sing only (3)                 songs.in  fact,she has already sung all the songs found(4)                     the karaoke discs . minh is singing in the karaoke (5)                         organized by the RC Center this saturday.her family is going(6)              to support her