◎ 题干
—Linda, I called you this morning, but nobody answered the phone.
—I'm sorry. I      a picnic with my family then.
A.haveB.hadC.am havingD.was having
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“ —Linda, I called you this morning, but nobody answered the phone. —I'm sorry. I a picnic with my family then.A.haveB.hadC.am havingD.was having…”主要考查了你对  【实义动词的单数第三人称形式】【实义动词】【动词短语】  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。