问题描述：
;some are playing football on the playground
A.none of the boys are here B.all the boys are not here
C.Every of the boys is here D.all boy is here
我觉得A,B好像都对,但答案是B,
A.none of the boys are here B.all the boys are not here
C.Every of the boys is here D.all boy is here
我觉得A,B好像都对,但答案是B,
问题解答：
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