◎ 题干
In the past, people used to _____ on foot or by horse.
[     ]
A. traveling
B. traveled
C. travel
D. be travel
◎ 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“In the past, people used to _____ on foot or by horse. [ ]A. traveling B. traveled C. travel D. be travel …”主要考查了你对  【动词短语】  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。