◎ 题干
I had just stepped out of the bathroom and was busy drying myself with a towel ________ I heard
the steps.
[     ]
A. while  
B. when
C. since  
D. after
◎ 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“I had just stepped out of the bathroom and was busy drying myself with a towel ________ I heard the steps. [ ]A. whileB. whenC. sinceD. after…”主要考查了你对  【并列连词】  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。