Thedoorbell
问题详情:
The doorbell _______ for more than five minutes, but there’s no answer.
A. was ringing B. rang C. had been ringing D. has been ringing
【回答】
D
知识点:现在完成进行时及其被动式
题型:选择题
问题详情:
The doorbell _______ for more than five minutes, but there’s no answer.
A. was ringing B. rang C. had been ringing D. has been ringing
【回答】
D
知识点:现在完成进行时及其被动式
题型:选择题