◎ 题干
I don't think all this bad language on TV should be allowed; there are certain standards that should be
________.
[     ]
A. kept up  
B. kept down
C. kept out  
D. kept off
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“I don't think all this bad language on TV should be allowed; there are certain standards that should be ________.[ ]A. kept upB. kept downC. kept outD. ke…”主要考查了你对  【动词短语】  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。