阅读下面短文,掌握其大意,从每小题所给的A、B、C三个选项中选出最佳选项。
There was once a couple named Sue and John. Both of them were 1.
In the late autumn, John was badly ill and became bedridden (长期卧床的). After the doctor visited John several times, he told Sue, "His condition is quite 2. John seems to have lost all will to live. If he doesn't want to live, medicines will not help him."
Sue tried her best to 3 John. She sang and danced, she painted their favorite pictures, she told jokes, but John did not respond (回应).
"Five," he said 4 one day, as he looked out of the window. When Sue asked what John meant, he explained slowly. "There are… only 5 leaves left on the tree now. When the last leaf falls, I... shall go with 6." Upon hearing this, Sue couldn't help crying. She went to their neighbor, Mr Smith, who was also an artist.
Mr Smith was sorry about John's poor health. He 7 his friend to get better, then he painted a leaf.
Over the next few days, it rained heavily, but the last leaf on the tree held on firmly (坚固地). Every day, John would look 8 and see the same lone leaf on the tree.
Then, one day, the doctor came in and said John's 9 was improving. John said to Sue, "I've realized that life is hard, but I shouldn't give up. That leaf has stayed on that tree for so long. It has taught me to 10!"
The doctor smiled, so did Sue.