过去完成时和过去完成进行时的区别是：过去完成时描述过去的过去发生的动作或者过去的过去发生的动作对过去造成影响；过去完成进行式描述过去的过去发生的动作持续到过去一直在进行，还会继续下去。请判断下列哪一项的时态使用有误？

、When I rang, Mary had already gone to work.
B、It was harder than we had thought.
C、She had lived with her daughter till then.
D、The work increased the fatigue they had been feeling.