是三级英语刚考完的真题
问题描述：
是三级英语刚考完的真题
17._______yesterday,you would have met Professor Jones.But now he has left for London.
A.Did you come
B.Had you come
C.Should you come
D.Were you to come
是B 可我选的C啊.为什么啊.
答
虚拟语气的用法,表示与过去事实相反