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1. If you are at a loose end, are you:
a) busy, with lots to do?
b) free, and looking for something to do?
c) lost?
2. This expression was originally used on:
a) ships
b) trains
c) aeroplanes
原文出处:http://www.englishonline.org.cn/zh-hans/listen-watch/language-snacks/loose-end#tabs-160170-2
