as the most excellent student in her university, as most classmates had expected, made her parents very happy.
A. Mary was chosen
B. Mary chosen
C. Mary being chosen
D. Mary’s being chosen
网友回答
A. Mary was chosen
B. Mary chosen
C. Mary being chosen
(答案→)D. Mary’s being chosen
解析：-ing形式的复合结构作主语时，其逻辑主语常用名词所有格或形容词性的物主代词。as most classmates had expected为非限制性定语从句。