◎ 题干
—It's very important for you to arrive on time.
—I ____ be there at seven o'clock, I promise.
[     ]
A. will
B. can
C. must
D. should
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“—It's very important for you to arrive on time.—I ____ be there at seven o'clock, I promise.[ ]A. willB. canC. mustD. should…”主要考查了你对  【助动词】  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。