Question

Who called you here? ( voice change)

Answer 1

Answer:

Passive Voice : You are called by whom.

Answer 2

Answer:

By whom were you called?

Explanation:

1. Here subject is missing but 'who' is interrogative pronoun here

2. 'Who' works here as a subject

3. It is an interrogative sentence. So here applied interrogative rules in the passive form as 'were' used before putting object to subject and all rules are same to same