◎ 题干

— Why didn't you warn them of the danger ahead?
— But what        otherwise? They never listen to me.

[     ]
A. could I do    
B. should I do      
C. could I have done  
D. must I have done
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—Why didn't you warn them of the danger ahead?—But whatotherwise? They never listen to me. [ ]A. could I do B. should I doC. could I have doneD. must I h…”主要考查了你对  【情态动词】【虚拟语气】  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。