◎ 题干
— Sorry indeed, I ______ to your birthday party if…
— Forget it. I know you were out on business.

[     ]

A. must come
B. would have come
C. must have come
D. would come
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—Sorry indeed, I ______ to your birthday party if… — Forget it. I know you were out on business. [ ]A. must come B. would have come C. must have come D. wo…”主要考查了你对  【情态动词】【虚拟语气】  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。