Charles is believed the floor yesterday; he is always helping others silently.A.to sweep B. to have sweptC. having swept D. Swept 题目和参考答案——青夏教育精英家教网—

题目内容

Charles is believed_______ the floor yesterday; he is always helping others silently.

A.to sweep B. to have swept

C. having swept D. Swept

【解析】试题分析：考查固定句型；sb be believed to have done sth 某人被认为做了某事，用不定式的完成式表示该动作先于主句动作完成。句意：人们认为查理昨天扫了地，因为他总会默默地帮助别人。故选 B。

考点：考查固定句型

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