While watching television, ____.A．the doorbell rangB．we heard the doorbell ring C．there was someone knocking at the doorD．the doorbell was ringing-高中英语-n多题

◎ 题干

While watching television, ____.

A．the doorbell rang	B．we heard the doorbell ring
C．there was someone knocking at the door	D．the doorbell was ringing

◎ 答案

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◎ 解析

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◎ 知识点

根据n多题专家分析，试题“While watching television, ____.A．the doorbell rangB．we heard the doorbell ring C．there was someone knocking at the doorD．the doorbell was ringing…”主要考查了你对【现在分词的被动式】，【现在分词】，【不定式的被动式】，【过去分词】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。

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