问题
选择题
— What made you so upset?
— ______ the exam.
A．Failing to pass
B．To fail passing
C．Failing passing
D．To fail to pass
答案
答案：A
本题考查动词的-ing形式作主语，完整形式为Failing to pass the exam made me so upset.。fail to do表示“未能做到”。