When i got to the station ,the train_________（left）for an hour,是填had left 还是had been away,为什么
问题描述：
When i got to the station ,the train_________（left）for an hour,
是填had left 还是had been away,为什么
答
这是一个过去完成时，但是，left的动作不可持续，因此选had been away.
答
这是一个过去完成时,但是,left的动作不可持续,因此选had been away.