Your letter came just as I ___ my office A.was leaving B.left C.had left.D.had b...

问题描述:

Your letter came just as I ___ my office A.was leaving B.left C.had left.D.had b...
Your letter came just as I ___ my office
A.was leaving B.left
C.had left.D.had been leaving
为什么不是B啊?
不是说我走了是信就来了么?
那可以是过去式呀?

句子的意思是:当我离开办公室时,你的信到了.
代表了一种状态,又因为是过去式,所以用过去进行时,选A既然是离开办公室,为什么不能用过去式啊??是一个伴随状态,离开的时候刚好信来了,所以用过去进行时