You __ change your dirty clothes since it will rainA needn't toB needn'tC needD won't need

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

是B啊,A,D没这么的说法吧,C明显不合语境

选B
need可做情态动词也可做实义动词.做情态动词有“必须”的意思,否定为needn't,“不必”之意,后面可接动词原形.做实义动词有“需要”之意,通常的表示是need to do,否定为don't/won't need to do