问题补充:
the words,the daughter understood what her mother was trying to tell her.
A. To be heard
B. To hear
C. Heard
D. Hearing
答案:
A. To be heard
B. To hear
C. Heard
(答案→)D. Hearing
解析:句意:听了这些话,女儿明白了母亲想要告诉她什么。分析句子结构可知,逗号前面的部分为伴随状语,不是表目的,故排除A、B两项;hear和逻辑主语the daughter之间是主谓关系,故应用v.ing形式,故选D项。