问题补充:
When the exam is over, you should hand in your exam papers, finished or .
A. something
B. otherwise
C. so
D. else
答案:
A. something
(答案→)B. otherwise
C. so
D. else
解析:句意: 考试结束时,无论你完成还是没完成,你都应该交上试卷。or otherwise为固定短语,意思为“或其他情况;或相反”。or so大约;or else否则;不然。