题目内容：

The telephone ___but when I got into the sitting room ,it stopped.A had rung B was ring C has ring

优质解答

A
B的话应该是 was ringing
这句话是过去发生的,所以应该是had

追问：

我打错了 就是was ringing

追答：

电话响是发生在我进去之前的，应该用过去完成时，如果是B的话应该是the telephone was ringing when i got into the sitting room