He was not the only one to A:fail the exam B to have failed the exam我感觉应该选b,但朗文字典505页里derive单词有个例句,用的是A,不确定者勿扰
问题描述：
He was not the only one to A:fail the exam B to have failed the exam
我感觉应该选b,但朗文字典505页里derive单词有个例句,用的是A,不确定者勿扰
答
A:fail the exam
to fail the exam是不定式作定语,不用考虑完成时.