It is when the plane ______ that you’d better find out at the booking office.
A．would take off
B．had taken off
C．was taking off
D．is taking off
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◎ 解析
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◎ 知识点
根据n多题专家分析，试题“It is when the plane ______ that you’d better find out at the booking office.A．would take offB．had taken offC．was taking offD．is taking off…”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。
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