◎ 题干
Sixteen  year-olds _______ go out alone at nights.  
[     ]
A.should be not allowed to          
B.should not be allowed to    
C.should not allowed to            
D.should not allowed
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Sixteenyear-olds _______ go out alone at nights.[ ]A.should be not allowed toB.should not be allowed toC.should not allowed to D.should not allowed…”主要考查了你对  【情态动词】【被动语态】  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。