这道题应选C
分析：1.need可以作实意动词,主要用法有两个：
A need to do sth A需要去做某事(主动)
A need doing sth A需要被.(被动)
例:Mary needs to do her homework.
Your hair needs cutting.(=Your hair needs to be
cut)
注:need作实意动词,既可作及物动词,也可作不及物动词.否定形式为don't/doesn't+need+其他
例:I need it.(need作及物动词)

2.need可以作情态动词,其后直接加动词原形,否定形式为needn't/need not+动词原形
所以,本题中A. needn't to go B. don't need go 这两个选项不符合语法.A选项应改为needn't go ,B选项应改为don't need to go