问题
选择题
The old man has a son and two daughters, ______ treat him well, _______ made him very sad.
A．and none of whom; as
B．neither of them; which
C．and none of whom; what
D．none of whom; which
答案
答案：D
题目分析：考查的定语从句，第一空是先行词是a son and two daughters由none of修饰，前面有逗号所以不用连词and，neither指两者都不。第二空的先行词是前面的整个句子故用关系词which，所以选D。
点评：定语从句的关键是划分句子成分，根据句意选择关系词，要求平时考生要加强这方面的练习。