完形填空阅读下面短文, 掌握其大意, 然后从各题所给的四个选项(A、B、C和D)中, 选出最佳选项. Years ago I lived in a building in a large city. The building __1__ door was only a few feet away from mine, __2__ I could look into the room on the same floor as mine. There was a woman who lived there. I could __3__ her as she sat by her window each afternoon, reading. One day, I found her windows were dirty. I would say to myself, "I wonder __4__ that woman doesn't wash her windows. They __5__ look terrible. " One bright morning I __6__ to do my spring house cleaning. I washed my windows on the __7__. Late in the afternoon I was __8__ to see, across the way, the woman sitting by her window clearly! Her windows were __9__! Since then, I often asked myself, "Am I __10__ at somebody through my own dirty window "