Most of the students felt rather disappointed at the English party. They say tha
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Most of the students felt rather disappointed at the English party. They say that it ______ better organized.
A. had been B. had to be C. must have been D. could have been
试题答案
D
解析:
could have done sth. 表示“本来能够做某事而实际上未能做成”。