______ the beginning of the speech the chairman made a joke． A.On B.At C.To D.For

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______ the beginning of the speech the chairman made a joke． A.On B.At C.To D.For

2022-09-20 07:24:23 208次冀教版英语九年级全册Lesson 24课时练习单选题反馈错误加入收藏正确率 : 100%

题目内容：

______ the beginning of the speech the chairman made a joke．
A.On B.At C.To D.For

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