All the memories of his childhood had ________ from his mind by the time he was 65.
句意： 65岁时， 他大脑中所有关于童年的记忆都渐渐模糊。 fade褪色； 消逝； 凋谢。 illustrate举例说明， 作图解。 confine限制， 闭居。 concern关心， 忧虑； 关系到。