◎ 题干
—My brother is ill in hospital.  
—I'm sorry ___ that.
[     ]
A. hear                    
B. hearing    
C. heard                  
D. to hear
◎ 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“—My brother is ill in hospital.—I'm sorry ___ that.[ ]A. hearB. hearingC. heardD. to hear…”主要考查了你对  【不定式】  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。