_____ when you started out?A.Has it snowed B.Did it snow C.Was it snowing D.Is it snowing
问题描述:
_____ when you started out?A.Has it snowed B.Did it snow C.Was it snowing D.Is it snowing
答
C 当你出门的时候,正在下雪吗?明显用过去式,排除A、D,下雪并不是一个瞬间就完成的动作,排除B