Long ago,there was a mother and a son living in a house.She worked hard every day,____they were always poor.

    One day,her son stole his friend's bag.“Mom,what do you think of this bag?”His mother praised her son instead of scolding him.The next time,he stole____overcoat.She praised him again.A few years____(late),he grew up to be a young man.He stole jewelry and brought them to his mother.This time,she did not scold her son.Then,he started____ (steal) more expensive things.

    One day,the police caught him.Before he____(put) in prison,he begged the police to meet his mother.They took him____his mother.As soon as he saw his mother,he suddenly bit her ear.“Ouch!What is the matter with you?”She finally scolded him.Her son answered.“If you had given me a scolding like that when I stole the first bag,I could not ____a thief.”____ (look) at her son heading to prison,“If only I____turn back time,I would scold him severely.”She said____(regret).

平面上有6条两两不平行的直线，求证：在所有的交角中，至少有一个角小于30.1°．

 Kate doesn't____ ____her mother at all．