_____ for you help,we might have got lost in the forestA.Had it notB.Had it not beenC.If it were notD.If we had not been选哪个?为什么?

问题描述:

_____ for you help,we might have got lost in the forest
A.Had it not
B.Had it not been
C.If it were not
D.If we had not been
选哪个?为什么?

B,虚拟语气,用过去完成时.表原因,had提前.