用B的理由.It'snothingserious.You'vej
It's nothing serus.You 've just caught_______cold. A.a bit B.a bit of C.a little D.a little of 答案选Ｂ想问一下不选Ｃ的理由．谢谢！ ＰＳ：越详细越好！
cold是名词,a little修饰形容词