完形填空 (共20小题，每小题.1.5分, 满分30分)
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，并在答题卡上将该项涂黑。
My father was a self-taught mandolin player. He was one of the best string ___56____ players in our town. He could not ___57___ music, but if he heard a tune a few times, he could play it.
Dad loved to play the mandolin for his ___ 58___ for he knew we enjoyed singing, and hearing him play. He was always there, ___59 ___ his time and efforts to see that his family had enough in their life. I had to grow into a man and have children of my own ____60____I realized how much he had sacrificed.
