题目

Comrade Li Dazhao, _____ librarian of Beijing University, was one of the founders of the Chinese Communist Party. A. sometimes B. sometime  C. some time  D. some times 答案：B 解析: sometime(=former)过去的，以前的：Alice Brown, a sometime pupil of our school, is now a teacher there.学校组织羽毛球比赛，六（1）班有4名男生和3名女生参加，如果要一男一女搭配，一共有______种不同的搭配方法．