问题
选择题
My sister ,_____ my family are proud, was admitted to Tsinghua University last autumn.
A．who
B．which
C．in which
D．of whom
答案
答案：D
题目分析：句意：我们家引以为荣的我的姐姐去年秋天被清华大学录取了。这里使用了定语从句，先行词是my sister，定语从句中使用了be proud of sb，所以用of whom引导定语从句，选D。