◎ 题干
Kids are not allowed to leave kindergartens _____ their parents come to pick them up.

A. since
B. unless
C. although
D. because
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“Kids are not allowed to leave kindergartens _____ their parents come to pick them up. [ ]A. since B. unless C. althoughD. because …”主要考查了你对  【从属连词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。