—Did you do on vacation?-Not really. I just stayed at home and helped mom.A. something

问题补充：

—Did you do on vacation?

---Not really. I just stayed at home and helped mom.

A. something special

B. anything special

C. something serious

D. anything serious

答案：

A. something special

(答案→)B. anything special

C. something serious

D. anything serious

解析：句意：假期你做什么特别的事情了吗？真的没有，我只是呆在家里帮妈妈。形容词修饰不定代词要后置；并且这是一个疑问句something要改为anything；serious 严肃的，放在此处不合适，故选B。