题目内容
The telephone ________ four times in the last hour, and each time it ________ for my roommate.
A. has rung; was
B. has been ringing; is
C. had rung; was
D. rang; has been
答案:A
解析:
解析:
现在完成时表示在过去的一段时间内已经发生过的事情,一般过去时表示对过去事实的陈述。
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