Question

---______?   ---She is a nurse.

A. Where does your mother do?    B. What does your mother do?

C. What is your mother doing?    D. Who is your mother?

Answer

B

【解析】句意：——你母亲是做什么的？——她是一名护士。Where does your mother do?你的母亲在哪里做？ What does your mother do? 你的母亲是做什么的？ What is your mother doing? 你的母亲正在做什么？Who is your mother? 你的母亲是谁？根据She is a nurse.可知此处表示询问工作，故选B。