Happy birthday, Alice? So you have twenty-one already?A. become B. turned C. grown D. pa

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A. bee
(答案→)B. turned
C. grown
D. passed
解析：考查系动词的用法。句意“生日快乐，爱丽丝！你现在已经21岁了啊？”bee“变得，成为”；turn指颜色，年龄的改变；grow后接形容词或不定式；pass“经过，通过”。故选B。