18． My mother ____ for Beijing in a few days. I wonder when the earliest plane ____ on Monday?
A．leaves; takes off
B．is leaving; takes off
C．is leaving; is taking off
D．leaves; is taking off
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◎ 知识点
根据n多题专家分析，试题“18． My mother ____ for Beijing in a few days. I wonder when the earliest plane ____ on Monday?A．leaves; takes offB．is leaving; takes offC．is leaving; is tak…”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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