◎ 题干
— It's eight o'clock already. Jack _____ be here by now.
— Oh, he told me that he was going to see his dentist and wouldn't be back until ten.
[     ]
A. must
B. can
C. should
D. need
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“— It's eight o'clock already. Jack _____be here by now. — Oh, he told me that he was going to see his dentist and wouldn't be back until ten. [ ]A. mustB.…”主要考查了你对  【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。