◎ 题干
—What are you doing outside the class? Didn’t you hear the clock ______?
—Sorry, sir. I ______.
A.strike; didn’t noticeB.striking; wasn’t noticing
C.is striking; didn’t noticeD.struck; wasn’t notice
◎ 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“—What are you doing outside the class? Didn’t you hear the clock ______? —Sorry, sir. I ______.A.strike; didn’t noticeB.striking; wasn’t noticingC.is st…”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。