◎ 题干
—What's the matter with Philips?
—Something must have happened to him. He left home three hours ago, but ________ at the party!
A.didn't arrive B.isn't arriving
C.hadn't arrived D.hasn't arrived
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“—What's the matter with Philips?—Something must have happened to him. He left home three hours ago, but ________ at the party!A.didn't arriveB.isn't arrivin…”主要考查了你对  【现在完成时】【现在完成时的被动语态】  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。