阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项。
The late Booth Tarkington always said, “I could take anything that life could force upon me except one thing: blindness. I could never 1 that.”
One day, when he was along in his sixties, Tarkington 2 down at the carpet on the floor. The colors were not clear, so he went to a 3, and he soon learned the truth: he was losing his sight. What he4 most had come on him. And 5 did Tarkington react to it? To his amazement, he felt quite 6. When total darkness closed in, Tarkington even said, “I found I could take the 7 of my eyesight, just as a man can 8 anything else. If I lost all five of my9, I know I could live on inside my mind. For it is in the mind we see, and in the mind we live, whether we know it or not.”
To 10 his eyesight, Tarkington had to go through over twelve operations within one year. He knew he couldn't 11 it, so the only way to lessen his 12 was to accept. And when he had to have 13 operations, he tried to remember how fortunate he was. He said, “How wonderful it is that 14 now has the skill to operate on anything so 15 as the human eye!”
A(n) 16 man would have been nervous if he had had to tolerate over twelve operations and 17 Yet, Tarkington said, “I wouldn't 18 this experience for a happier one.” It taught him 19. It taught him that nothing life could bring him was 20 his strength to tolerate.
