We do have the most supportive parents a

问题选择题

We do have the most supportive parents and teachers, ________will make a difference to our study, unless all of us make every effort .

A．none of them

B．all of them

C．none of whom

D．all of whom

答案

答案：C

题目分析：句意：我们有最支持我们的父母和老师，如果我们不努力，谁对我们的学习也没有多大的作用。逗号前后都是句子，这里缺少连词，故排除AB；这是定语从句，先行词是parents and teachers，从句缺少的是主语，none of whom他们中没有；all of whom他们所有的人，根据句意故选C。