– Were you late for work yesterday morning?– Yes. By the time I got to the bus stop the e

问题补充：

– Were you late for work yesterday morning?

– Yes. By the time I got to the bus stop, the early bus .

A. has already left B. is already left C. had already left

答案：

解析：句意：昨天上午你上班迟到了吗？——是的，等我到达公交车站的时候，早班车已经开走了。结合语境可知下文描述的是过去某时前已经完成的动作，故用过去完成时态。选C。