to school this morning, I met a friend of mine.
A. I was walking
B. Walking
C. While I walking
D. Walked
网友回答
A. I was walking
(答案→)B. Walking
C. While I walking
D. Walked
解析: 考查非谓语动词。Walk和逻辑主语I是主谓关系,要用Walking;如果选A,两个句子之间要加连词;而C应是While I was walking。所以选B。