Years ago, I lived in a house in a large city.  The house next door was only a few meters away from    .  Through the window, I could often see a woman who I  never met doing some reading in the house every afternoon.
Several months went by, I began to notice that her window was dirty.  Everything
was not very clear    the dirty window.  I wondered    the woman didn’t wash
her window, it really looked terrible.
One bright morning, I decided to clean my house,     washing the window
inside.   Late in the afternoon when 1 finished all the cleaning, I sat down by the window with a cup of coffee for a rest.  How surprising! I found that the   window was actually so clean that she could be     clearly sitting by the window. That was quite an important lesson for me.  How often had I looked at     through my own shortcomings  (缺点) !
Since then, I have been used to    myself whether I am looking through my own dirty window.  Before I want to judge someone, I always think more than before
and try to clean the dirty window so that I may see the world around me more    .