____ looking at me you could never guess what type of girl I might be.A.By B.For C.With
问题描述：
____ looking at me you could never guess what type of girl I might be.A.By B.For C.With
为什么选A?
答
by可用于主动语态
By+动名词 通过……,凭……（表示通过做某事而得到某种结果）
A：He succeeded by working hard.
B：The old woman makes a living by selling fruit.
所以选A