◎ 题干
—I still have a toothache.          
—Oh, sorry, the medicine didn't work, so you ________try another kind.        
[     ]
A. need      
B. mustn't    
C. may      
D. can't
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“—I still have a toothache. —Oh, sorry, the medicine didn't work, so you ________try another kind.[ ]A. needB. mustn't C. may D. can't…”主要考查了你对  【情态动词】  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。