问题补充:
I picked up a paper at random , through the headlines and put it where it had been .
A. looking
B. looked
C. to look
D. and looked
答案:
A. looking
(答案→)B. looked
C. to look
D. and looked
解析:考查并列的谓语。句意:我随意拿起一张报纸,浏览了一下标题,放回了又来的位置。根据题中的谓语picked up,此空与and put是并列的动作,所以用过去式,选B。