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

问题补充：

The telephone three times in the last hour, and each time it for my sister.

A. had rung; was

B. has rung; was

C. rang; has been

D. has been ringing; is

答案：

A. had rung; was

(答案→)B. has rung; was

C. rang; has been

D. has been ringing; is

解析：句意：在过去的一个小时里，电话响了三次，每次都是找我的姐姐的。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。故B项正确。