—When did the puter crash?
—This morning,while I the reading materials downloaded from some websites.(2012·福建)
A. have sorted
B. was sorting
C. am sorting
D. had sorted
网友回答
A. have sorted
(答案→)B. was sorting
C. am sorting
D. had sorted
解析:考查动词的时态。句意:——电脑什么时候死机的?——今天上午,当我正在把从一些网站上下载下来的阅读材料进行分类的时候。根据句意可知,死机发生在我正在做某事时,也就是在过去的某个时间点,我正在做某事,故应用过去进行时态。