Introduction to Letters to Sam
Dear Reader，
Please allow me to tell you something before you read this book.When my __36__，从后文的grandfather可知Sam是“我孙子”。Sam，was born，my heart was filled with joy.I had been sitting in a wheelchair为41题设伏。 for 20 years before then，and I have been __37__病得很严重。 ill many times.So I wondered if I would have the __38__不知道是否还有机会告诉孙子。词语复现，是后文chance的近义词。 to tell Sam what I had __39__.我一生中所观察到的东西。
