The missing Malaysia Airlines Flight MH370 was officially declared an _______ and it was a difficult...
2022-11-05 06:28:57 21次 2014-2015学年福建莆田一中泉州五中漳州一中高三上三校联考英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
The missing Malaysia Airlines Flight MH370 was officially declared an _______ and it was a difficult moment for all.
A. issue B. affair C. event D. Accident
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