a problem upsets me very much ,please solve it to help me

题目

a problem upsets me very much ,please solve it to help me
he ( )his parents about hie failure in the examination
a dares not tell b dares not to tell c dare not to tell d dare not tell

答案

D,dare是情态动词所以没有第三人称单数,所以排除A,B,情态动词的否定直接加not再加动词原形,所以选D