◎ 题干
When I was at school, I _____ up very late, reading storybooks. 
A.used to stayB.was used to stay
C.used to stayingD.is used to staying
◎ 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“When I was at school, I _____ up very late, reading storybooks.A.used to stayB.was used to stayC.used to stayingD.is used to staying…”主要考查了你对  【序数词】  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。