问题
选择题
---Can I tell Peter about the news?
---No, I don’t want anyone else to know it. You ______ keep it to yourself.
A．must
B．need
C．can
D．may
答案
答案：A
考察情态动词。A必须B需要C能够D也许
根据句意“不想让其他任何人知道”，所以语气应该是最强烈的“必须”，故选A
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