内容正文:
【宁夏银川一中2019届高三第一次月考】阅读下面短文,从短文后各题所给的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项。
I still remember an old lady, a customer on the paper route in my hometown when I was 12 years old. She taught me a lesson in____21____that I shall never forget.
On a(n) ___22___afternoon, a friend and I were throwing stones onto the____23____of the old lady's house. The stone that I found was too smooth, ___24___it slipped from my hand as I let it go and___25___straight not for the covering on top of the house but for a small window on the house's back porch. At the sound of broken glass, we knew we were___26___.We turned and ___27___.
I was too ___28___ about getting caught that first night to be concerned about the old lady with the broken window in the freezing weather. However, a few days later, when I was sure that I hadn't been___29___, I started to feel guilty about her______30______.She still greeted me with a smile each day___31___I gave her the paper , but I was no longer able to act comfortably in her ___32