◎ 题干
Flight 3010______,I must be off now or I’ll be late.
A.to announceB.is announcedC.is being announcedD.announced
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Flight 3010______,I must be off now or I’ll be late.A.to announceB.is announcedC.is being announcedD.announced…”主要考查了你对  【一般现在时】【将来进行时】【过去完成进行时】【过去将来时的被动语态】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。