问题补充:
has donated much money to the charity .
A. Hers friend
B. A friend of her
C. Some of her friends
D. A friend of hers
答案:
A. Hers friend
B. A friend of her
C. Some of her friends
(答案→)D. A friend of hers
解析:her形容词性物主代词,她的,不能用作介词宾语;hers名词性物主代词,她的,不能用来修饰名词,作定语。联系本句助动词has,可知主语是单数形式,some of her friends她的一些朋友,为复数形式。故选A,她的一个朋友。