◎ 题干

The house was reduced to _____by the fire _____by a cigarette butt.
A. ash, causeB.ashes, being caused
C. ash, being causedD.ashes, caused
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“The house was reduced to _____by the fire _____by a cigarette butt.A. ash, causeB.ashes, being caused C. ash, being causedD.ashes, caused…”主要考查了你对  【现在分词的被动式】【现在分词】【不定式的被动式】【过去分词】  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。