括号内词适当形式填空:By eleven o'clock yesterday ,we ______(arrive)at the station.By 后面加时间段还是时间点是过去完成时的时间状语?

问题描述:

括号内词适当形式填空:By eleven o'clock yesterday ,we ______(arrive)at the station.
By 后面加时间段还是时间点是过去完成时的时间状语?