8. I don t think he could have done such a stupid thing last night, _______ ?
A. do I B. could he C. has he D. did he
这个选D
我可以排除A.C
但是为什么是D不是B呢?
[此贴子已经被作者于2005-5-6 12:57:52编辑过]
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posted on 2005-05-08 13:19
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