◎ 题干
Many a student _____ the importance of learning a foreign language.
[     ]
a. have realized
b. has realized
c. have been realized
d. has been realized
◎ 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“Many a student _____ the importance of learning a foreign language. [ ]a. have realized b. has realized c. have been realizedd. has been realized …”主要考查了你对  【现在完成时】【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。