◎ 题干
-People find it hard to get across the river.            
-I think at least two bridges          over it.   
[     ]
A. need    
B. are needing    
C. will need    
D. are needed
◎ 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“-People find it hard to get across the river. -I think at least two bridgesover it.[ ]A. need B. are needingC. will need D. are needed…”主要考查了你对  【被动语态】【一般现在时】  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。