At the opening_ _of the school, our headmaster gave a short speech. A．ceremonyB．formC．matterD．event
2022-11-16 03:37:55 68次 2014-2015学年四川中江龙台中学高一上期中英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
At the opening_ _of the school, our headmaster gave a short speech.
A．ceremonyB．formC．matterD．event
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