nobody but his family _____ the secret.A.know B.are known C.have known D.knew
问题描述：
nobody but his family _____ the secret.A.know B.are known C.have known D.knew
答
选择D
nobody/nothing/everybody/ everyone等+复数名词作主语时,谓语动词用单数.
所以ABC 三选项都不行.