◎ 题干
he said he would ring me up, but he didn’t ___my telephone number?
A.Has he forgottenB.Must he forgetC.Must he have forgottenD.Could he have forgotten
◎ 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“he said he would ring me up, but he didn’t ___my telephone number?A.Has he forgottenB.Must he forgetC.Must he have forgottenD.Could he have forgotten…”主要考查了你对  【虚拟语气】【情态动词】  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。