题目内容
There are five people in the room, but I know _____.
A. both of them B. none of them C. all of them
A. both of them B. none of them C. all of them
B
none表示没有一个人,指三者或三者以上,而all 也指三者或三者以上的人都,根据汉语意思,可知答案为B
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