John is the only one of the students in the class who never a mistake even when it is poi

问题补充：

John is the only one of the students in the class who never a mistake even when it is pointed out to him.

A. admits making

B. admitted to make

C. admitted making

D. admitted having made

答案：

(答案→)A. admits making

B. admitted to make

C. admitted making

D. admitted having made

解析：考查固定搭配和动名词用法。固定搭配admit doing sth承认做某事；本题的先行词是the only one在句中做主语，谓语动词用单数的形式。固定搭配admit doing sth承认做某事；句意：John是班级里所有学生中唯一的承认犯了错误的人。本句话不需要死于完成式。故A正确。