John ________ his father about his failure in the exam．

John ________ his father about his failure in the exam．

A.dares not tell

B.dares not telling

C.dare not tell

D.dares not to tell

答案及解析： C

解析：

dare not tell中的dare是情态动词，dare作情态动词时，没有人称和数的变化，后接动词原形；

否定形式：dare not。dare作实义动词时，在肯定句中后面常接带to的不定式，在否定句或疑问句中不定式中的to可带也可不带。