Question

Call in the doctor at once change into passive voice

Answer 1

There are two voices of verbs, passive and active.

Verb is said to be in passive voice when the subject of the sentence is acted upon by the verb.

It always starts with subject and must have a 'by'.

Here in the sentence- Call in the doctor at once. Doctor is the subject and call in is the verb.

Passive voice- The doctor must be called in at once.

Answer 2

Answer:

it does not have a passive voice.

Explanation:

intransitive verb cannot have a passive voice because it does not have an object . call in the doctor at once call is the verb doctor is the subject there is no object.