Read the passage carefully and choose a suitale word to fill each blank.

He has good salary, but he feels unhappy.

Galileo _______ his first telescope in 1609.

If parents bring up a child with the sole aim of turning the child into a genius, they will cause disaster. This is one of the biggest mistakes which ambitious parents make. Unrealistic parental expectations can cause great damage to children.

However, if parents are not too unrealistic about what they expect their children to do, but ambitious in a sensible way, the child may succeed in doing very well- especially if the parents are very supportive of their child.

Do An Duc is very lucky. He is crazy about music, and his parents help him a lot by taking to concerts and arranging piano and violin lessons for him. Although Do An Duc's parents know very little about music, they have tried their best to help their son with his interest. However, they never make him enter music competition if he is unwilling.

Duc's friend, Vu Hoang Duy, however, is not so lucky. Although his parents are successful musicians, they set too high a standard for Duy. They want their son to be successful as they are so they enter him for every piano competition held. They are very unhappy when he doesn't win. "When I was at your age, I used to win every competition I entered," Duy's father tells him. Duy is always afraid that he will disappoint his parents and now he always seems quiet and unhappy.

One of the biggest mistakes any parents can make is to___________________.