— Have you heard of Loulan? — Of course. It is believed _____ many years ago.
[ ]
A. that it covered over by sandstorms B. that it is covered over by sandstorms C. to be covered over by sandstorms D. to have been covered over by sandstorms
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根据n多题专家分析，试题“— Have you heard of Loulan?— Of course. It is believed _____ many years ago. [ ]A. that it covered over by sandstorms B. that it is covered over by sandstor…”主要考查了你对 【不定式的完成式】，【不定式的被动式】 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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