◎ 题干
My sister is ill, and she       stay in bed for several days.   
[     ]

A. need          
B. must    
C. has to        
D. has to be

◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“My sister is ill, and shestay in bed for several days.[ ]A. need B. mustC. has to D. has to be…”主要考查了你对  【情态动词】【主谓一致】  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。