….and the age at which it starts and ends varies (31) _____.

 his father is a musician

 his parents are quite rich

 his mother knows little about music

 his parents help him in a sensible way

 force their children into achieving success

  themselves have been very successful

 understand and help their children sensibly

 arrange private lessons for their children

 push their child into trying too much

 help their child to become a genius

 make their child become a musician

  neglect their child’s education

 push their child into trying too much

 help their child to become a genius

 make their child become a musician

  neglect their child’s education

 call

  called

 being called

 having called 

 refusing

 avoiding

  with

 without

 however    

  but

  moreover

 although