问题
选择题
The teachers _________ the office for a few minutes when we arrived.
A．had been away from
B．had left
C．have been away from
D．have left
答案
答案：A
题目分析：句意：当我们到时老师已经离开办公室几分钟了。老师离开发生在过去的过去，故用过去完成时，与一段时间连用，动作要用延续性的，leave对应的延续性的状态是be away ,故选A.
