◎ 题干

28.When the telephone rang, I happened________in the kitchen, but when I came over to get it, it
rang off.
A.to cookB.to have cookedC.to be cookingD.having cooked
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◎ 知识点
    根据n多题专家分析,试题“28.When the telephone rang, I happened________in the kitchen, but when I came over to get it, itrang off.A.to cookB.to have cookedC.to be cookingD.having cooke…”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。