34. It’s reported that in the past 50 years around 80 percent of Beijing’s courtyard houses ______.
A．had wiped out
B．have wiped out
C．had been wiped out
D．have been wiped out
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◎ 知识点
根据n多题专家分析，试题“34. It’s reported that in the past 50 years around 80 percent of Beijing’s courtyard houses ______. A．had wiped outB．have wiped outC．had been wiped outD．have…”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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