题目

 Nobody knows how he was murdered，but________people behind the scenes can guess why. A. a great deal of            B. a good many C. a good amount of         D. a great many of 答案： 【解析】选B。考查短语辨析。A、C项修饰不可数名词。a good many可修饰可数名词, a good many people很多人，合乎句意。a great many of后应跟the people表范围。

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