◎ 题干
I was watching the news on TV _______ the power went off.
A.whenB.asC.whileD.until
◎ 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 was watching the news on TV _______ the power went off. A.whenB.asC.whileD.until…”主要考查了你对  【并列连词】【从属连词】  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。