◎ 题干
Helen had to shout _____ herself _____ above the sound of the noise. 
[     ]
A. making;hear                              
B. to make;hear  
C. making;heard                              
D. to make;heard
◎ 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“Helen had to shout _____ herself _____ above the sound of the noise.[ ]A. making;hear B. to make;hear C. making;heardD. to make;heard…”主要考查了你对  【不定式】【过去分词】  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。