—Can I tell Peter about the news?—No I don’t want anyone else to know it. You keep it to

问题补充：

—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. must

B. need

C. can

D. may

解析：A “我不想让其他任何人知道，你必须保密。”，must语气最强。