The train has left when we got to the station.
祝你学习进步O(∩_∩)O哈!
如果对你有所帮助,还望采纳O(∩_∩)O哈!
如还有不懂的,还可以继续追问哦\(^o^)/~He was a waiter for two years before he went to college 改一处错误He has been a waiter for two years before he went to collegeIn the last few years,I traveled to many cities.In the last few years,I had traveled to many citiesSo far,we didn't hear from him.So far,we haven'theard from him.