◎ 题干

It’s quite normal to___ ten percent of the cost of a building for a period of six months or so, in case faults are found in it.
A.keep upB. keep awayC.keep offD.keep back
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“It’s quite normal to___ ten percent of the cost of a building for a period of six months or so, in case faults are found in it.A.keep upB. keep awayC.keep offD…”主要考查了你对  【动词短语】【动词】  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。