问题补充:
There are five people in the room, but I know .
A. both of them
B. none of them
C. all of them
D. neither of them
答案:
A. both of them
(答案→)B. none of them
C. all of them
D. neither of them
解析:both表示两个都,none意思是没有人,多指三个或者三个以上;all表示三个或三个以上都;neither表示两个都不。根据题意,房间里有五个人,但是我一个也不认识。三个以上都不,故选B。