◎ 题干
Mary was doing her homework _____. 
[     ]
A. just now
B. just then
C. in a minute
D. a moment ago
◎ 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“Mary was doing her homework _____. [ ]A. just now B. just then C. in a minuteD. a moment ago…”主要考查了你对  【副词】  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。