The telephone three times in the last hour, and each time it for my father.A. had rung;

The telephone three times in the last hour, and each time it for my father.
A. had rung; was
B. has been ringing; is
C. rang; has been
D. has rung; was

A. had rung; wasB. has been ringing; isC. rang; has been(答案→)D. has rung; was解析：考查时态。本题第一句的关键词是in the last hour，该时间状语通常和现在完成时连用；第二空描述的是过去所发生的事情，故使用一般过去时。句意：在过去的一个小时里，电话响了三次，每次都是找我的爸爸的。故D项正确。

就是这个解释