You __ change your dirty clothes since it will rain

问题描述:

You __ change your dirty clothes since it will rain
A needn't to
B needn't
C need
D won't need

B needn't
needn't = need not
在否定句中 need 起到助动词的作用,如同 can、may 在一些句子中一样,后面直接跟动词原形而非不定式.