阅读下面两篇短文，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。
(2015·甘肃省二诊)
A new mother was anxious to see her newlyborn baby. But she was __1__ when the baby was in her arms. The baby had been born without ears.
With time going on, it __2__ that the baby's hearing was perfect. It was only his __3__ that was damaged. When he rushed home from school one day and __4__ himself into his mother's arms, she sighed, __5__ that his life was to be misfortunate.
