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When I came into the teacher’s office, he ________ on the phone.
A.was speaking B.spoke C.had been speakingD.had spoken
A

试题分析:考查时态。句意:当我进入教室办公室的时候,他正在接电话。根据句意说明是在我进入办公室的这个过去的时间点上正在进行的动作,故使用过去进行时。因为过去进行时可以表示在过去的一个时间点上正在进行的动作,或者表示在过去的一个时间段里所发生的事情。故A正确。
点评:本题的关键在于要理解前一句的意思,是指在过去的这个时间点上所发生的事情,故使用过去进行时。过去进行时可以表示在过去的一个时间点上正在进行的动作,或者表示在过去的一个时间段里所发生的事情。
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